题目内容
解方程.
①
x=15
②1.5x=28.5
③5+
x=13.
①
| 5 |
| 8 |
②1.5x=28.5
③5+
| 1 |
| 3 |
(1)
x=15,
x÷
=15÷
,
x=24;
(2)1.5x=28.5,
1.5x÷1.5=28.5÷1.5,
x=19;
(3)5+
x=13,
5+
x-5=13-5,
x÷
=8÷
,
x=24.
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
| 5 |
| 8 |
x=24;
(2)1.5x=28.5,
1.5x÷1.5=28.5÷1.5,
x=19;
(3)5+
| 1 |
| 3 |
5+
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
x=24.
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