题目内容
解方程或解比例
x+
x=42
=
.
| 2 |
| 3 |
| 1 |
| 2 |
| x |
| 2.4 |
| 15 |
| 0.8 |
(1)
x+
x=42 (2)
=
x=42 0.8x=2.4×15
x=42÷
0.8x=36
x=36; x=45;
| 2 |
| 3 |
| 1 |
| 2 |
| x |
| 2.4 |
| 15 |
| 0.8 |
| 7 |
| 6 |
x=42÷
| 7 |
| 6 |
x=36; x=45;
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