问题 解答题
计算:
(1)84-[
1
4
×(-3)-
5
6
+7]÷
1
12

(2)-32×(-
1
3
)
2
+(
3
4
-
1
6
+
3
8
)×(-24)⋅
答案

(1)原式=84-(-

3
4
-
5
6
+7)×12

=84+

3
4
×12+
5
6
×12-7×12

=84+9+10-84

=19;

(2)原式=-9×

1
9
+
3
4
×(-24)-
1
6
×(-24)+
3
8
×(-24)

=-1-18+4-9

=-28+4

=-24.

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