题目内容
求未知数x.
(1)
X-
X=24
(2)5X÷40%=15.
(1)
| 5 |
| 6 |
| 2 |
| 3 |
(2)5X÷40%=15.
(1)
X-
X=24,
X=24,
X÷
=24÷
,
X=144;
(2)5X÷40%=15,
5X÷40%×40%=15×40%,
5X=6;
5X÷5=6÷5;
X=1.2.
| 5 |
| 6 |
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
X=144;
(2)5X÷40%=15,
5X÷40%×40%=15×40%,
5X=6;
5X÷5=6÷5;
X=1.2.
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