题目内容
求未知数X.
| x:16=2.5:12 |
|
(1)
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 67 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
| 67 |
| 6 |
| 5 |
| 6 |
x=
| 67 |
| 5 |
(2)x:16=2.5:12,
12x=16×2.5,
12x=40,
12x÷12=40÷12,
x=
| 10 |
| 3 |
(3)
| 4 |
| 5 |
3.8x=38,
3.8x÷3.8=38÷3.8,
x=10.
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