题目内容
解方程.
x+
=
0.75:x=1.25:0.25.
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 2 |
0.75:x=1.25:0.25.
(1)
x+
=
,
x+
-
=
-
,
x=
,
x÷
=
÷
,
x=
;
(2)0.75:x=1.25:0.25,
1.25x=0.75×0.25,
1.25x=0.1875,
1.25x÷1.25=0.1875÷1.25,
x=0.15.
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 2 |
| 3 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 2 |
| 1 |
| 8 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
x=
| 1 |
| 2 |
(2)0.75:x=1.25:0.25,
1.25x=0.75×0.25,
1.25x=0.1875,
1.25x÷1.25=0.1875÷1.25,
x=0.15.
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