题目内容
解比例或方程:
(1)
:
=24:2x
(2)x-
x=4.
(1)
| 4 |
| 5 |
| 1 |
| 6 |
(2)x-
| 7 |
| 9 |
(1)
:
=24:2x,
×2x=24×
,
x=4,
x=2
;
(2)x-
x=4,
x=4,
x=18.
| 4 |
| 5 |
| 1 |
| 6 |
| 4 |
| 5 |
| 1 |
| 6 |
| 8 |
| 5 |
x=2
| 1 |
| 2 |
(2)x-
| 7 |
| 9 |
| 2 |
| 9 |
x=18.
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