题目内容
计算:
(1)(-
)÷
×3×(-1
).
(2)23×(-5)-(-3)÷(-
).
(1)(-
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 9 |
(2)23×(-5)-(-3)÷(-
| 3 |
| 128 |
(1)原式=-
×3×3×(-
)
=6;
(2)原式=-115-3×
=-115-128
=-243.
| 3 |
| 5 |
| 10 |
| 9 |
=6;
(2)原式=-115-3×
| 128 |
| 3 |
=-115-128
=-243.
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