题目内容
解方程.
Χ-
| 5Χ÷
| 40%Χ-1.5=8.5. |
(1)x-
x=
,
x=
,
x×
=
×
,
x=
;
(2)5x÷
=
,
5x÷
×
=
×
,
5x=
,
5x÷5=
÷5,
x=
;
(3)40%x-1.5=8.5,
40%x-1.5+1.5=8.5+1.5,
40%x=10,
40%x÷40%=10÷40%,
x=25.
| 1 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 3 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 3 |
| 8 |
| 4 |
| 3 |
x=
| 1 |
| 2 |
(2)5x÷
| 1 |
| 4 |
| 5 |
| 3 |
5x÷
| 1 |
| 4 |
| 1 |
| 4 |
| 5 |
| 3 |
| 1 |
| 4 |
5x=
| 5 |
| 12 |
5x÷5=
| 5 |
| 12 |
x=
| 1 |
| 12 |
(3)40%x-1.5=8.5,
40%x-1.5+1.5=8.5+1.5,
40%x=10,
40%x÷40%=10÷40%,
x=25.
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