题目内容
解方程
12:
=x:
6x+1.5x=9.
12:
| 3 |
| 5 |
| 1 |
| 2 |
6x+1.5x=9.
(1)12:
=x:
,
x=
×12,
x×
=6×
,
x=10;
(2)6x+1.5x=9,
7.5x=9,
7.5x÷7.5=9÷7.5,
x=1.2.
| 3 |
| 5 |
| 1 |
| 2 |
| 3 |
| 5 |
| 1 |
| 2 |
| 3 |
| 5 |
| 5 |
| 3 |
| 5 |
| 3 |
x=10;
(2)6x+1.5x=9,
7.5x=9,
7.5x÷7.5=9÷7.5,
x=1.2.
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