题目内容
解方程.
×-5=10
40%x=4.2.
| 3 |
| 5 |
40%x=4.2.
(1)
x-5=10,
x-5+5=10+5,
x=15,
x÷
=15÷
,
x=25;
(2)40%x=4.2,
40%x÷40%=4.2÷40%,
x=10.5.
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
x=25;
(2)40%x=4.2,
40%x÷40%=4.2÷40%,
x=10.5.
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