题目内容
解方程
7x=
x÷
=
x+
=
.
7x=
| 7 |
| 8 |
| 14 |
| 15 |
| 1 |
| 7 |
| 3 |
| 4 |
| 7 |
| 8 |
(1)7x=
,
7x÷7=
÷7,
x=
;
(2)x÷
=
,
x÷
×
=
×
,
x=
;
(3)x+
=
,
x+
-
=
-
,
x=
.
| 7 |
| 8 |
7x÷7=
| 7 |
| 8 |
x=
| 1 |
| 8 |
(2)x÷
| 14 |
| 15 |
| 1 |
| 7 |
x÷
| 14 |
| 15 |
| 14 |
| 15 |
| 1 |
| 7 |
| 14 |
| 15 |
x=
| 2 |
| 15 |
(3)x+
| 3 |
| 4 |
| 7 |
| 8 |
x+
| 3 |
| 4 |
| 3 |
| 4 |
| 7 |
| 8 |
| 3 |
| 4 |
x=
| 1 |
| 8 |
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