题目内容
求未知数X.
(1)
X=0.9
(2)7.2:6=2.4:X.
(1)
| 3 |
| 4 |
(2)7.2:6=2.4:X.
(1)
X=0.9,
X÷
=0.9÷
,
X=0.9×
,
X=1.2;
(2)7.2:6=2.4:X.
7.2X=6×2.4,
7.2X÷7.2=14.4÷7.2,,
X=2.
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 4 |
X=0.9×
| 4 |
| 3 |
X=1.2;
(2)7.2:6=2.4:X.
7.2X=6×2.4,
7.2X÷7.2=14.4÷7.2,,
X=2.
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