题目内容
列比例并解比例.
X与3.6是比例的外项,
与
是比例的内项,求X.
X与3.6是比例的外项,
| 3 |
| 2 |
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x:
=
:3.6,
3.6x=
×
,
3.6x=
,
3.6x÷3.6=
÷3.6,
x=
.
| 3 |
| 2 |
| 4 |
| 5 |
3.6x=
| 3 |
| 2 |
| 4 |
| 5 |
3.6x=
| 6 |
| 5 |
3.6x÷3.6=
| 6 |
| 5 |
x=
| 1 |
| 3 |
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