题目内容
解方程.
| X÷
|
|
(1)
x=10,
x÷
=10÷
,
x=12.5;
(2)X÷
=
,
X÷
×
=
×
,
x=
;
(3)
X-2=3,
X-2+2=3+2,
X÷
=5÷
,
x=12.
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
x=12.5;
(2)X÷
| 4 |
| 7 |
| 9 |
| 10 |
X÷
| 4 |
| 7 |
| 4 |
| 7 |
| 9 |
| 10 |
| 4 |
| 7 |
x=
| 18 |
| 35 |
(3)
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 12 |
x=12.
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