题目内容
求未知数x
x-
x-6=18
20:x=
:15.
x-
| 5 |
| 8 |
20:x=
| 5 |
| 2 |
(1)x-
x-6=18,
x-6=18,
x-6+6=18+6,
x=24,
x×
=24×
,
x=64;
(2)20:x=
:15,
x=20×15,
x=300,
x×
=300×
,
x=120.
| 5 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
| 8 |
| 3 |
| 8 |
| 3 |
x=64;
(2)20:x=
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 2 |
| 5 |
| 2 |
| 5 |
x=120.
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