题目内容
| 5.6+4x=8 | 2.5x-1.1=0.9. |
(1)
x-
x=10,
0.4x=10,
0.4x÷0.4=10÷0.4,
x=25;
(2)5.6+4x=8,
5.6+4x-5.6=8-5.6,
4x=2.4,
4x÷4=2.4÷4,
x=0.6;
(3)2.5x-1.1=0.9,
2.5x-1.1+1.1=0.9+1.1,
2.5x=2,
2.5x÷2.5=2÷2.5,
x=0.8.
| 7 |
| 10 |
| 3 |
| 10 |
0.4x=10,
0.4x÷0.4=10÷0.4,
x=25;
(2)5.6+4x=8,
5.6+4x-5.6=8-5.6,
4x=2.4,
4x÷4=2.4÷4,
x=0.6;
(3)2.5x-1.1=0.9,
2.5x-1.1+1.1=0.9+1.1,
2.5x=2,
2.5x÷2.5=2÷2.5,
x=0.8.
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