题目内容
求未知数x.
(1)
:x=3:12
(2)2x+1.5×4=6.
(1)
| 3 |
| 4 |
(2)2x+1.5×4=6.
(1)
:x=3:12,
3x=12×
,
x=
,
x=3;
(2)2x+1.5×4=6,
2x+6=6,
2x=6-6,
2x=0,
x=0.
| 3 |
| 4 |
3x=12×
| 3 |
| 4 |
x=
| 12×0.75 |
| 3 |
x=3;
(2)2x+1.5×4=6,
2x+6=6,
2x=6-6,
2x=0,
x=0.
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