题目内容
解方程.
①
| ②
| ③5x÷
|
①
+2x=
,
+2x-
=
-
,
2x=
,
2x÷2=
÷2,
x=
;
②
÷x=
,
÷x×x=
×x,
=
x,
÷
=
x÷
,
x=8;
③5x÷
=
,
5x÷
×
=
×
,
5x=
,
5x÷5=
÷5,
x=
.
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 3 |
| 1 |
| 5 |
2x=
| 2 |
| 15 |
2x÷2=
| 2 |
| 15 |
x=
| 1 |
| 15 |
②
| 12 |
| 5 |
| 3 |
| 10 |
| 12 |
| 5 |
| 3 |
| 10 |
| 12 |
| 5 |
| 3 |
| 10 |
| 12 |
| 5 |
| 3 |
| 10 |
| 3 |
| 10 |
| 3 |
| 10 |
x=8;
③5x÷
| 1 |
| 4 |
| 5 |
| 3 |
5x÷
| 1 |
| 4 |
| 1 |
| 4 |
| 5 |
| 3 |
| 1 |
| 4 |
5x=
| 5 |
| 12 |
5x÷5=
| 5 |
| 12 |
x=
| 1 |
| 12 |
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