题目内容
解方程或比例:
| 0.6:x=0.45:22.5 |
|
(1)
=
:4,
4x=9×
,
4x÷4=6÷4,
x=1.5;
(2)0.6:x=0.45:22.5,
0.45x=0.6×22.5,
0.45x=13.5,
0.45x÷0.45=13.5÷0.45,
x=30;
(3)
x+
x=34,
x=34,
x÷
=34÷
,
x=40.
| x |
| 9 |
| 2 |
| 3 |
4x=9×
| 2 |
| 3 |
4x÷4=6÷4,
x=1.5;
(2)0.6:x=0.45:22.5,
0.45x=0.6×22.5,
0.45x=13.5,
0.45x÷0.45=13.5÷0.45,
x=30;
(3)
| 1 |
| 4 |
| 3 |
| 5 |
| 17 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
x=40.
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