题目内容
求未知数X.
X:
=6:5
=
.
X:
| 2 |
| 7 |
| 10 |
| x |
| 4.5 |
| 0.9 |
(1)x:
=6:5,
5x=6×
,
5x=
,
5x÷5=
÷5,
x=
,
(2)
=
,
4.5x=10×0.9,
4.5x=9,
4.5x÷4.5=9÷4.5,
x=2.
| 2 |
| 7 |
5x=6×
| 2 |
| 7 |
5x=
| 12 |
| 7 |
5x÷5=
| 12 |
| 7 |
x=
| 12 |
| 35 |
(2)
| 10 |
| x |
| 4.5 |
| 0.9 |
4.5x=10×0.9,
4.5x=9,
4.5x÷4.5=9÷4.5,
x=2.
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