题目内容
解比例
:
=
:x
=
.
| 1 |
| 9 |
| 1 |
| 3 |
| 1 |
| 12 |
| x |
| 3.5 |
| 4 |
| 0.5 |
(1)
:
=
:x,
x=
×
,
x=
,
×9=
×9,
x=
;
(2)
=
,
0.5x=4×3.5,
x=
,
x=28.
| 1 |
| 9 |
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 9 |
| 1 |
| 3 |
| 1 |
| 12 |
| 1 |
| 9 |
| 1 |
| 36 |
| 1 |
| 9 |
| 1 |
| 36 |
x=
| 1 |
| 4 |
(2)
| x |
| 3.5 |
| 4 |
| 0.5 |
0.5x=4×3.5,
x=
| 4×3.5 |
| 0.5 |
x=28.
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