题目内容
解方程.
(1)4x+2(8-x)=36
(2)
x=
×
.
(1)4x+2(8-x)=36
(2)
| 8 |
| 9 |
| 1 |
| 6 |
| 16 |
| 51 |
(1)4x+2(8-x)=36,
4x+16-2x=36,
2x+16=36,
2x+16-16=36-16,
2x=20,
2x÷2=20÷2,
x=10;
(2)
x=
×
,
x÷
=
×
÷
,
x=
×
×
,
x=
.
4x+16-2x=36,
2x+16=36,
2x+16-16=36-16,
2x=20,
2x÷2=20÷2,
x=10;
(2)
| 8 |
| 9 |
| 1 |
| 6 |
| 16 |
| 51 |
| 8 |
| 9 |
| 8 |
| 9 |
| 1 |
| 6 |
| 16 |
| 51 |
| 8 |
| 9 |
x=
| 1 |
| 6 |
| 16 |
| 51 |
| 9 |
| 8 |
x=
| 1 |
| 17 |
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