题目内容
求未知数x的值.
(1)x-
x=
(2)
=
.
(1)x-
| 3 |
| 4 |
| 5 |
| 6 |
(2)
| 1.5 |
| 3 |
| 12-1.5 |
| x |
(1)x-
x=
,
(1-
)x=
,
x=
,
x×4=
×4,
x=
;
(2)
=
,
0.5=
,
0.5x=10.5,
0.5x÷0.5=10.5÷0.5,
x=21.
| 3 |
| 4 |
| 5 |
| 6 |
(1-
| 3 |
| 4 |
| 5 |
| 6 |
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 4 |
| 5 |
| 6 |
x=
| 10 |
| 3 |
(2)
| 1.5 |
| 3 |
| 12-1.5 |
| x |
0.5=
| 10.5 |
| x |
0.5x=10.5,
0.5x÷0.5=10.5÷0.5,
x=21.
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