题目内容
解方程.
3x+2x=35
+x=
x-
=
.
3x+2x=35
| 4 |
| 7 |
| 8 |
| 9 |
x-
| 2 |
| 5 |
| 1 |
| 4 |
(1)3x+2x=35,
5x=35,
5x÷5=35÷5,
x=7;
(2)
+x=
,
+x-
=
-
,
x=
;
(3)x-
=
,
x-
+
=
+
,
x=
.
5x=35,
5x÷5=35÷5,
x=7;
(2)
| 4 |
| 7 |
| 8 |
| 9 |
| 4 |
| 7 |
| 4 |
| 7 |
| 8 |
| 9 |
| 4 |
| 7 |
x=
| 20 |
| 63 |
(3)x-
| 2 |
| 5 |
| 1 |
| 4 |
x-
| 2 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
| 2 |
| 5 |
x=
| 13 |
| 20 |
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