题目内容
解方程.
3x+
| x-
| 5:8=x:32. |
(1)3x+
=
,
3x+
-
=
-
,
3x=
,
3÷3=
÷3,
x=
;
(2)x-
x=
,
x=
,
x÷
=
÷
,
x=
;
(3)5:8=x:32,
8x=5×32,
8x÷8=5×32÷8,
x=20.
| 1 |
| 2 |
| 5 |
| 3 |
3x+
| 1 |
| 2 |
| 1 |
| 2 |
| 5 |
| 3 |
| 1 |
| 2 |
3x=
| 7 |
| 6 |
3÷3=
| 7 |
| 6 |
x=
| 7 |
| 18 |
(2)x-
| 4 |
| 9 |
| 10 |
| 21 |
| 5 |
| 9 |
| 10 |
| 21 |
| 5 |
| 9 |
| 5 |
| 9 |
| 10 |
| 21 |
| 5 |
| 9 |
x=
| 6 |
| 7 |
(3)5:8=x:32,
8x=5×32,
8x÷8=5×32÷8,
x=20.
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