题目内容
解方程:
(1)5(3x-4)-2(x-1)=5(2x-1)
(2)
=
.
(1)5(3x-4)-2(x-1)=5(2x-1)
(2)
| 6x-1 |
| 8 |
| 8 |
| 3 |
(1)5(3x-4)-2(x-1)=5(2x-1)
15x-20-2x+2=10x-5,
13x-18=10x-5,
13x-18-10x=10x-5-10x,
3x-18=-5,
3x-18+18=-5+18,
3x=13,
3x÷3=13÷3,
x=
;
(2)
=
,
3(6x-1)=64,
18x-3=64,
18x-3+3=64+3,
18x=67,
18x÷18=67÷18,
x=
.
15x-20-2x+2=10x-5,
13x-18=10x-5,
13x-18-10x=10x-5-10x,
3x-18=-5,
3x-18+18=-5+18,
3x=13,
3x÷3=13÷3,
x=
| 13 |
| 3 |
(2)
| 6x-1 |
| 8 |
| 8 |
| 3 |
3(6x-1)=64,
18x-3=64,
18x-3+3=64+3,
18x=67,
18x÷18=67÷18,
x=
| 67 |
| 18 |
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