题目内容
解方程:
| x-28%x=21.6 |
|
(1)
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
X+1.5=37.5,
X+1.5-1.5=37.5-1.5,
X=36;
(2)x-28%x=21.6,
0.72x=21.6,
0.72x÷0.72=21.6÷0.72,
x=30;
(3)
| 3 |
| 4 |
| 5 |
| 8 |
| 3 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 3 |
| 4 |
| 1 |
| 8 |
X=6.
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