x-4.8=6.5怎么解?
还有9x-4×1.2=15.63x+5x=19.2x-7=60.8x+3.4x=8.44.2x÷1.6=14.73x+4=135x+45=47.5(8+12)x=345x...
还有
9x-4×1.2=15.6
3x+5x=19.2
x-7=6
0.8x+3.4x=8.4
4.2x÷1.6=14.7
3x+4=13
5x+45=47.5
(8+12)x =34
5x-2×8=19
7.6x-7x=3.6
6×5+4x=64
求这些题的 解 和 检验 谢谢 回答的符合我要求的 多家悬赏哦~ 展开
9x-4×1.2=15.6
3x+5x=19.2
x-7=6
0.8x+3.4x=8.4
4.2x÷1.6=14.7
3x+4=13
5x+45=47.5
(8+12)x =34
5x-2×8=19
7.6x-7x=3.6
6×5+4x=64
求这些题的 解 和 检验 谢谢 回答的符合我要求的 多家悬赏哦~ 展开
1个回答
展开全部
x-4.8=6.5 解: x=4.8+6.5 = 11.3
9x-4×1.2=15.6解: x=(15.6+4.8)/9 = 20.4/9=2.26666667
3x+5x=19.2解: x=19.2/8=2.4
x-7=6解: x=7+6 = 13
0.8x+3.4x=8.4解: x=8.4/(0.8+3.4)=2
4.2x÷1.6=14.7解: x= 14.7*1.6/4.2=5.6
3x+4=13解: x= (13-4)/3 = 9/3 =3
5x+45=47.5解: x = (47.5-45)/5 = 0.5
(8+12)x =34解: x = 34/(8+12) = 34/20 = 1.7
5x-2×8=19 解:x = (19+16)/5 = 7
7.6x-7x=3.6 解: x = 3.6/(7.6-7) = 6
6×5+4x=64解: x = (64 - 6*5)/4 = 8.5
9x-4×1.2=15.6解: x=(15.6+4.8)/9 = 20.4/9=2.26666667
3x+5x=19.2解: x=19.2/8=2.4
x-7=6解: x=7+6 = 13
0.8x+3.4x=8.4解: x=8.4/(0.8+3.4)=2
4.2x÷1.6=14.7解: x= 14.7*1.6/4.2=5.6
3x+4=13解: x= (13-4)/3 = 9/3 =3
5x+45=47.5解: x = (47.5-45)/5 = 0.5
(8+12)x =34解: x = 34/(8+12) = 34/20 = 1.7
5x-2×8=19 解:x = (19+16)/5 = 7
7.6x-7x=3.6 解: x = 3.6/(7.6-7) = 6
6×5+4x=64解: x = (64 - 6*5)/4 = 8.5
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