题目内容
计算:(6
-3
)÷(3
-2
)÷2
= .
| 6 |
| 7 |
| 9 |
| 13 |
| 3 |
| 7 |
| 2 |
| 11 |
| 7 |
| 13 |
分析:先同时运算两个小括号里面的减法,再把算出的带分数变成假分数,把除法变成乘法,然后约分求解.
解答:解:(6
-3
)÷(3
-2
)÷2
,
=3
÷1
÷2
,
=
×
×
,
=
,
=1.
| 6 |
| 7 |
| 9 |
| 13 |
| 3 |
| 7 |
| 2 |
| 11 |
| 7 |
| 13 |
=3
| 15 |
| 91 |
| 19 |
| 77 |
| 7 |
| 13 |
=
| 288 |
| 91 |
| 77 |
| 96 |
| 13 |
| 33 |
=
=1.
点评:本题运算较复杂,要注意用三个分数之间约分的方法进行求解.
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