题目内容
3
| 8.5-3x=2
| 3
|
(1)3
x-2
=4,
3
x-2
+2
=4+2
,
3
x=6
,
3
x÷3
=6
÷3
,
x=
;
(2)8.5-3x=2
,
8.5-3x+3x=2
+3x,
3x+2
=8.5,
3x+2
-2
=8.5-2
,
3x=6,
3x÷3=6÷3,
x=2;
(3)3
÷x=4,
3
÷x×x=4×x,
4x=3
,
4x÷4=3
÷4,
x=
.
| 5 |
| 6 |
| 1 |
| 2 |
3
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
3
| 5 |
| 6 |
| 1 |
| 2 |
3
| 5 |
| 6 |
| 5 |
| 6 |
| 1 |
| 2 |
| 5 |
| 6 |
x=
| 39 |
| 23 |
(2)8.5-3x=2
| 1 |
| 2 |
8.5-3x+3x=2
| 1 |
| 2 |
3x+2
| 1 |
| 2 |
3x+2
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
3x=6,
3x÷3=6÷3,
x=2;
(3)3
| 5 |
| 6 |
3
| 5 |
| 6 |
4x=3
| 5 |
| 6 |
4x÷4=3
| 5 |
| 6 |
x=
| 23 |
| 24 |
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