题目内容
| 解方程. 8X+25=57 |
| 7X÷
|
(1)8X+25=57,
8X+25-25=57-25,
8X=32,
8X÷8=32÷8,
X=4;
(2)
| 2 |
| 5 |
| 1 |
| 4 |
| 13 |
| 20 |
| 13 |
| 20 |
| 13 |
| 20 |
| 13 |
| 20 |
X=40;
(3)7X÷
| 1 |
| 2 |
| 3 |
| 5 |
7X÷
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 2 |
7X=
| 3 |
| 10 |
7X÷7=
| 3 |
| 10 |
X=
| 3 |
| 70 |
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题目内容
| 解方程. 8X+25=57 |
| 7X÷
|
| 2 |
| 5 |
| 1 |
| 4 |
| 13 |
| 20 |
| 13 |
| 20 |
| 13 |
| 20 |
| 13 |
| 20 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 2 |
| 3 |
| 10 |
| 3 |
| 10 |
| 3 |
| 70 |