题目内容
解方程
①
| ②
| ③10×7-5x=9.2. |
①
x+
x=42,
x×6+
x×6=42×6,
4x+3x=252,
7x=252,
7x÷7=252÷7,
x=36.
②
:
=x:50,
x=
×50,
x=15,
x÷
=15÷
,
x=75.
③10×7-5x=9.2,
70=9.2+5x,
5x=70-9.2,
5x÷5=60.8÷5,
x=12.16.
| 2 |
| 3 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 2 |
4x+3x=252,
7x=252,
7x÷7=252÷7,
x=36.
②
| 3 |
| 10 |
| 1 |
| 5 |
| 1 |
| 5 |
| 3 |
| 10 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
x=75.
③10×7-5x=9.2,
70=9.2+5x,
5x=70-9.2,
5x÷5=60.8÷5,
x=12.16.
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