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计算(1)(-34-59+712)÷136; (...
计算(1)(-34-59+712)÷136;(2)|-79|÷(23-15)-13×(-4)2;(3)-12-[137+(-12)÷6]2×(-34)3....
计算(1)(-34-59+712)÷136; (2)|-79|÷(23-15)-13×(-4)2;(3)-12-[137+(-12)÷6]2×(-34)3.
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(1)原式=(-
-
+
)×36
=-
×36-
×36+
×36
=-27-20+21
=-26;
(2)原式=
÷
-
×16
=
×
-
×16
=
-
=-
;
(3)原式=-1-[1
-2]2×(-
)
=-1-
×(-
)
=-1+
=-
.
3 |
4 |
5 |
9 |
7 |
12 |
=-
3 |
4 |
5 |
9 |
7 |
12 |
=-27-20+21
=-26;
(2)原式=
7 |
9 |
7 |
15 |
1 |
3 |
=
7 |
9 |
15 |
7 |
1 |
3 |
=
5 |
3 |
16 |
3 |
=-
11 |
3 |
(3)原式=-1-[1
3 |
7 |
27 |
64 |
=-1-
16 |
49 |
27 |
64 |
=-1+
27 |
192 |
=-
165 |
192 |
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