题目内容
解方程.
| 2.65+1.5х=5.65 | 3.2х-1.8х=56 | 9×5.4×4х=50. |
①2.65+1.5х=5.65,
2.65+1.5х-2.65=5.65-2.65,
1.5x÷1.5=3÷1.5,
x=2;
②3.2х-1.8х=56,
1.4x=56,
1.4x÷1.4=56÷1.4,
x=40;
③9×5.4×4х=50,
194.4x=50,
194.4x÷194.4=50÷194.4,
x=
.
2.65+1.5х-2.65=5.65-2.65,
1.5x÷1.5=3÷1.5,
x=2;
②3.2х-1.8х=56,
1.4x=56,
1.4x÷1.4=56÷1.4,
x=40;
③9×5.4×4х=50,
194.4x=50,
194.4x÷194.4=50÷194.4,
x=
| 125 |
| 486 |
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