题目内容
求未知数x.
x-0.25=
:
=x:0.8.
x-0.25=
| 1 |
| 4 |
| 1 |
| 20 |
| 1 |
| 5 |
(1)x-0.25=
,
x-0.25+0.25=0.25+0.25,
x=0.5;
(2)
:
=x:0.8,
1:4=x:0.8,
4x=0.8,
4x÷4=0.8÷4,
x=0.2.
| 1 |
| 4 |
x-0.25+0.25=0.25+0.25,
x=0.5;
(2)
| 1 |
| 20 |
| 1 |
| 5 |
1:4=x:0.8,
4x=0.8,
4x÷4=0.8÷4,
x=0.2.
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