题目内容
解方程:
(1)2(3y-1)=7(y-2)+3;
(2)
-1=
.
(1)2(3y-1)=7(y-2)+3;
(2)
| x-3 |
| 5 |
| x-4 |
| 3 |
(1)6y-2=7y-14+3,
6y-7y=-14+3+2,
-y=-9,
y=9;
(2)3(x-3)-15=5(x-4),
3x-9-15=5x-20,
3x-5x=9+15-20,
-2x=4,
x=-2.
6y-7y=-14+3+2,
-y=-9,
y=9;
(2)3(x-3)-15=5(x-4),
3x-9-15=5x-20,
3x-5x=9+15-20,
-2x=4,
x=-2.
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