题目内容
解方程
X=10X-
X=20X÷
=
.
| 4 |
| 5 |
| 3 |
| 8 |
| 1 |
| 2 |
| 3 |
| 4 |
(1)
x=10,
x×
=10×
,
x=
;
(2)X-
X=20,
x×
=20×
,
x=32;
(3)X÷
=
,
x÷
×
=
×
,
x=
.
| 4 |
| 5 |
| 4 |
| 5 |
| 5 |
| 4 |
| 5 |
| 4 |
x=
| 25 |
| 2 |
(2)X-
| 3 |
| 8 |
| 5 |
| 8 |
| 8 |
| 5 |
| 8 |
| 5 |
x=32;
(3)X÷
| 1 |
| 2 |
| 3 |
| 4 |
x÷
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 2 |
x=
| 3 |
| 8 |
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