谁还能再写几道这样的等式?(少年谜组问)

谁还能再写几道这样的等式?(少年谜组问)□□□-□□□=1□□□□□-□□□=2□□□□□-□□□=3□□□□□-□□□=4□□□□□-□□□=5□□□□□-□□□=6□... 谁还能再写几道这样的等式?(少年谜组问)

□□□-□□□=1□□
□□□-□□□=2□□
□□□-□□□=3□□
□□□-□□□=4□□
□□□-□□□=5□□
□□□-□□□=6□□
空格内填入1、2、3、4、5、6、7、8各一次,使等式能够成立。共有多少种答案? 想搜集全这些算式。百度知道中有的就不要再答了,只需要告诉有多少种答案。不全的请你回答!

再次感谢答题的老师。
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1、□□□-□□□=1□□ ,68个:
347-162=185,347-165=182,347-182=165,347-185=162
356-172=184,356-174=182,356-182=174,356-184=172
365-217=148,365-218=147,365-247=118,365-248=117
374-216=158,374-218=156,374-256=118,374-258=116
437-251=186,437-256=181,437-281=156,437-286=151
482-315=167,482-317=165,482-365=117,482-367=115
518-342=176,518-346=172,518-372=146,518-376=142
527-341=186,527-346=181,527-381=146,527-386=141
617-432=185,617-435=182,617-482=135,617-485=132
653-471=182,653-472=181,653-481=172,653-482=171
671-523=148,671-528=143,671-543=128,671-548=123
716-532=184,716-534=182,716-582=134,716-584=132
743-561=182,743-562=181,743-581=162,743-582=161
743-615=128,743-618=125,743-625=118,743-628=115
752-614=138,752-618=134,752-634=118,752-638=114
815-642=173,815-643=172,815-672=143,815-673=142
824-651=173,824-653=171,824-671=153,824-673=151

2、□□□-□□□=2□□ ,56个:
478-213=265,478-215=263,478-263=215,478-265=213
487-231=256,487-236=251,487-251=236,487-256=231
514-236=278,514-238=276,514-276=238,514-278=236
541-263=278,541-268=273,541-273=268,541-278=263
568-321=247,568-327=241,568-341=227,568-347=221
586-312=274,586-314=272,586-372=214,586-374=212
658-421=237,658-427=231,658-431=227,658-437=221
685-412=273,685-413=272,685-472=213,685-473=212
721-435=286,721-436=285,721-453=268,721-458=263
721-463=258,721-468=253,721-485=236,721-486=235
748-512=236,748-516=232,748-532=216,748-536=212
784-521=263,784-523=261,784-561=223,784-563=221
847-612=235,847-615=232,847-632=215,847-635=212
874-621=253,874-623=251,874-651=223,874-653=221

3、□□□-□□□=3□□ ,40个:
465-127=338,465-128=337,465-137=328,465-138=327
483-126=357,483-127=356,483-156=327,483-157=326
618-243=375,618-245=373,618-273=345,618-275=343
645-317=328,645-318=327,645-327=318,645-328=317
654-271=383,654-273=381,654-281=373,654-283=371
672-314=358,672-318=354,672-354=318,672-358=314
681-324=357,681-327=354,681-354=327,681-357=324
726-341=385,726-345=381,726-381=345,726-385=341
843-516=327,843-517=326,843-526=317,843-527=316
861-524=337,861-527=334,861-534=327,861-537=324

4、□□□-□□□=4□□ ,56个:
578-132=446,578-136=442,578-142=436,578-146=432
587-123=464,587-124=463,587-163=424,587-164=423
623-145=478,623-148=475,623-175=448,623-178=445
632-145=487,632-147=485,632-154=478,632-158=474
632-174=458,632-178=454,632-185=447,632-187=445
713-245=468,713-248=465,713-265=448,713-268=445
731-245=486,731-246=485,731-285=446,731-286=445
758-312=446,758-316=442,758-342=416,758-346=412
785-321=464,785-324=461,785-361=424,785-364=421
812-345=467,812-347=465,812-365=447,812-367=445
821-345=476,821-346=475,821-354=467,821-357=464
821-364=457,821-367=454,821-375=446,821-376=445
857-421=436,857-426=431,857-431=426,857-436=421
875-412=463,875-413=462,875-462=413,875-463=412

5、□□□-□□□=5□□ ,44个:
673-125=548,673-128=545,673-145=528,673-148=525
682-135=547,682-137=545,682-145=537,682-147=535
736-152=584,736-154=582,736-182=554,736-184=552
745-162=583,745-163=582,745-182=563,745-183=562
754-216=538,754-218=536,754-236=518,754-238=516
763-215=548,763-218=545,763-245=518,763-248=515
781-235=546,781-236=545,781-245=536,781-246=535
817-253=564,817-254=563,817-263=554,817-264=553
835-261=574,835-264=571,835-271=564,835-274=561
862-315=547,862-317=545,862-345=517,862-347=515
871-325=546,871-326=545,871-345=526,871-346=525

6、□□□-□□□=6□□ ,16个:
768-123=645,768-125=643,768-143=625,768-145=623
786-132=654,786-134=652,786-152=634,786-154=632
867-213=654,867-214=653,867-253=614,867-254=613
876-231=645,876-235=641,876-241=635,876-245=631
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1、□□□-□□□=1□□ ,66个:
347-162=185,347-165=182,347-182=165,347-185=162
356-172=184,356-174=182,356-182=174,356-184=172
365-217=148,365-218=147,365-248=117,
374-216=158,374-218=156,374-256=118,374-258=116
437-251=186,437-256=181,437-281=156,437-286=151
482-315=167,482-317=165,482-367=115,
518-342=176,518-346=172,518-372=146,518-376=142
527-341=186,527-346=181,527-381=146,527-386=141
617-432=185,617-435=182,617-482=135,617-485=132
653-471=182,653-472=181,653-481=172,653-482=171
671-523=148,671-528=143,671-543=128,671-548=123
716-532=184,716-534=182,716-582=134,716-584=132
743-561=182,743-562=181,743-581=162,743-582=161
743-615=128,743-618=125,743-625=118,743-628=115
752-614=138,752-618=134,752-634=118,752-638=114
815-642=173,815-643=172,815-672=143,815-673=142
824-651=173,824-653=171,824-671=153,824-673=151

2、□□□-□□□=2□□ ,56个:
478-213=265,478-215=263,478-263=215,478-265=213
487-231=256,487-236=251,487-251=236,487-256=231
514-236=278,514-238=276,514-276=238,514-278=236
541-263=278,541-268=273,541-273=268,541-278=263
568-321=247,568-327=241,568-341=227,568-347=221
586-312=274,586-314=272,586-372=214,586-374=212
658-421=237,658-427=231,658-431=227,658-437=221
685-412=273,685-413=272,685-472=213,685-473=212
721-435=286,721-436=285,721-453=268,721-458=263
721-463=258,721-468=253,721-485=236,721-486=235
748-512=236,748-516=232,748-532=216,748-536=212
784-521=263,784-523=261,784-561=223,784-563=221
847-612=235,847-615=232,847-632=215,847-635=212
874-621=253,874-623=251,874-651=223,874-653=221

3、□□□-□□□=3□□ ,38个:
465-127=338,465-128=337,465-137=328,465-138=327
483-126=357,483-127=356,483-156=327,483-157=326
618-243=375,618-245=373,618-273=345,618-275=343
645-317=328,645-318=327,645-327=318,645-328=317
654-271=383,654-273=381,654-283=371
672-314=358,672-318=354,672-354=318,672-358=314
681-324=357,681-327=354,681-354=327,681-357=324
726-341=385,726-345=381,726-381=345,726-385=341
843-516=327,843-517=326,843-526=317,843-527=316
861-524=337,861-527=334,861-534=327

4、□□□-□□□=4□□ ,56个:
578-132=446,578-136=442,578-142=436,578-146=432
587-123=464,587-124=463,587-163=424,587-164=423
623-145=478,623-148=475,623-175=448,623-178=445
632-145=487,632-147=485,632-154=478,632-158=474
632-174=458,632-178=454,632-185=447,632-187=445
713-245=468,713-248=465,713-265=448,713-268=445
731-245=486,731-246=485,731-285=446,731-286=445
758-312=446,758-316=442,758-342=416,758-346=412
785-321=464,785-324=461,785-361=424,785-364=421
812-345=467,812-347=465,812-365=447,812-367=445
821-345=476,821-346=475,821-354=467,821-357=464
821-364=457,821-367=454,821-375=446,821-376=445
857-421=436,857-426=431,857-431=426,857-436=421
875-412=463,875-413=462,875-462=413,875-463=412

5、□□□-□□□=5□□ ,40个:
682-135=547,682-137=545,682-145=537,682-147=535
736-152=584,736-154=582,736-182=554,736-184=552
745-162=583,745-163=582,745-182=563,745-183=562
754-216=538,754-218=536,754-236=518,754-238=516
763-215=548,763-218=545,763-245=518,763-248=515
781-235=546,781-236=545,781-245=536,781-246=535
817-253=564,817-254=563,817-263=554,817-264=553
835-261=574,835-264=571,835-271=564,835-274=561
862-315=547,862-317=545,862-345=517,862-347=515
871-325=546,871-326=545,871-345=526,871-346=525

6、□□□-□□□=6□□ ,10个:
768-123=645,768-125=643,768-143=625,768-145=623
786-132=654,786-134=652,867-253=614,867-254=613
876-231=645,876-245=631
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