题目内容
解下列方程或比例.
X:
| X-50%X=0.4 |
|
(1)x:
=
:
x=
×
x÷
=
÷
x=
;
(2)x-50%x=0.4
50%x=0.4
50%x÷50%=0.4÷50%
x=0.8;
(3)
x-
x=
x=
x÷
=
÷
x=1
.
| 2 |
| 5 |
| 5 |
| 6 |
| 3 |
| 8 |
| 3 |
| 8 |
| 2 |
| 5 |
| 5 |
| 6 |
| 3 |
| 8 |
| 3 |
| 8 |
| 1 |
| 3 |
| 3 |
| 8 |
x=
| 8 |
| 9 |
(2)x-50%x=0.4
50%x=0.4
50%x÷50%=0.4÷50%
x=0.8;
(3)
| 4 |
| 5 |
| 2 |
| 3 |
| 2 |
| 9 |
| 2 |
| 15 |
| 2 |
| 9 |
| 2 |
| 15 |
| 2 |
| 15 |
| 2 |
| 9 |
| 2 |
| 15 |
x=1
| 2 |
| 3 |
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