(1)?13?(+13)+(?23)?(?17)(2)(74?58+1112)÷(?724)(3)(?1)5×[?32×(13?1)2?2]×(?32)
(1)?13?(+13)+(?23)?(?17)(2)(74?58+1112)÷(?724)(3)(?1)5×[?32×(13?1)2?2]×(?32)....
(1)?13?(+13)+(?23)?(?17)(2)(74?58+1112)÷(?724)(3)(?1)5×[?32×(13?1)2?2]×(?32).
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(1)-
-(+13)+(-
)-(-17)
=-
-13-
+17
=-1+4
=3;
(2)(
-
+
)÷(-
)
=(
-
+
)×(-
)
=
×(-
)-
×(-
)+
)×(-
)
=-6+
-
=-6-1
=-7;
(3)(-1)5×[-32×(
-1)2-2]×(-
)
=-1×(-9×
-2)×(-
)
=-1×(-4-2)×(-
)
=-1×(-6)×(-
)
=-9.
1 |
3 |
2 |
3 |
=-
1 |
3 |
2 |
3 |
=-1+4
=3;
(2)(
7 |
4 |
5 |
8 |
11 |
12 |
7 |
24 |
=(
7 |
4 |
5 |
8 |
11 |
12 |
24 |
7 |
=
7 |
4 |
24 |
7 |
5 |
8 |
24 |
7 |
11 |
12 |
24 |
7 |
=-6+
15 |
7 |
22 |
7 |
=-6-1
=-7;
(3)(-1)5×[-32×(
1 |
3 |
3 |
2 |
=-1×(-9×
4 |
9 |
3 |
2 |
=-1×(-4-2)×(-
3 |
2 |
=-1×(-6)×(-
3 |
2 |
=-9.
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