题目内容
| 解方程: 4×1.25-6x=3 | 2
| x:
|
(1)4×1.25-6x=3,
5-6x=3,
5-6x+6x=3+6x,
3+6x=5,
3+6x-3=5-3,
6x=2,
6x÷6=2÷6,
x=
;
(2)2
x÷8=125×30%,
2
x÷8×8=125×30%×8,
2
x=300,
2
x÷2
=300÷2
,
x=
;
(3)x:
=
:
,
x=
×
,
x=
,
x×
=
×
,
x=
.
5-6x=3,
5-6x+6x=3+6x,
3+6x=5,
3+6x-3=5-3,
6x=2,
6x÷6=2÷6,
x=
| 1 |
| 3 |
(2)2
| 1 |
| 4 |
2
| 1 |
| 4 |
2
| 1 |
| 4 |
2
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 4 |
x=
| 400 |
| 3 |
(3)x:
| 3 |
| 4 |
| 4 |
| 11 |
| 7 |
| 9 |
| 7 |
| 9 |
| 3 |
| 4 |
| 4 |
| 11 |
| 7 |
| 9 |
| 3 |
| 11 |
| 7 |
| 9 |
| 9 |
| 7 |
| 3 |
| 11 |
| 9 |
| 7 |
x=
| 27 |
| 77 |
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