题目内容
解方程
| x÷
| x-
|
(1)
x=
x×9=
×9
x=6;
(2)x÷
=28
x÷
×
=28×
x=49;
(3)x-
=
x-
+
=
+
x=
.
| 1 |
| 9 |
| 2 |
| 3 |
| 1 |
| 9 |
| 2 |
| 3 |
x=6;
(2)x÷
| 7 |
| 4 |
x÷
| 7 |
| 4 |
| 7 |
| 4 |
| 7 |
| 4 |
x=49;
(3)x-
| 2 |
| 7 |
| 1 |
| 14 |
x-
| 2 |
| 7 |
| 2 |
| 7 |
| 1 |
| 14 |
| 2 |
| 7 |
x=
| 5 |
| 14 |
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