问题
解答题
计算: (1)-21-35+17; (2)(-15)÷5×
(3)-12×(1
(4)[2-5×(-
|
答案
(1)原式=-39.
(2)原式=-
3 |
2 |
(3)原式=-12×
16-9+10 |
12 |
(4)原式=(2-
5 |
4 |
计算: (1)-21-35+17; (2)(-15)÷5×
(3)-12×(1
(4)[2-5×(-
|
(1)原式=-39.
(2)原式=-
3 |
2 |
(3)原式=-12×
16-9+10 |
12 |
(4)原式=(2-
5 |
4 |