题目内容
已知,a=-2,b=-
,c=1.5,计算(a-b)×(-4)+(a+c)÷b的值.
| 3 |
| 4 |
原式=(-2+
)×(-4)+(-2+1.5)÷(-
)
=(-
)×(-4)+(-
)×(-
)
=5+
=5
.
| 3 |
| 4 |
| 3 |
| 4 |
=(-
| 5 |
| 4 |
| 1 |
| 2 |
| 4 |
| 3 |
=5+
| 2 |
| 3 |
=5
| 2 |
| 3 |
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