题目内容
解方程.
4x+18=50
x:
=2:
.
4x+18=50
x:
| 3 |
| 5 |
| 1 |
| 3 |
(1)4x+18=50,
4x+18-18=50-18,
4x=32,
4x÷4=32÷4,
x=8;
(2)x:
=2:
,
x=
×2,
x=
,
x×3=
×3,
x=
.
4x+18-18=50-18,
4x=32,
4x÷4=32÷4,
x=8;
(2)x:
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 3 |
| 5 |
| 1 |
| 3 |
| 6 |
| 5 |
| 1 |
| 3 |
| 6 |
| 5 |
x=
| 18 |
| 5 |
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