题目内容
解方程
| 0.25×3+25%x=4.75 |
| 4x-1.6x=48. |
(1)0.25×3+25%x=4.75,
0.75+25%x=4.75,
0.75+25%x-0.75=4.75-0.75,
25%x=4,
25%x÷25%=4÷25%,
x=16;
(2)
| 2 |
| 3 |
| 5 |
| 12 |
| 2 |
| 3 |
| 2 |
| 3 |
| 5 |
| 12 |
| 2 |
| 3 |
x=
| 5 |
| 8 |
(3)4x-1.6x=48,
2.4x=48,
2.4x÷2.4=48÷2.4,
x=20.
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