题目内容
(1)7x-6=4x+6;
(2)y+
=
y+2;
(3)2(3x-1)-3(x+5)=1;
(4)
-
=1.
(2)y+
| 1 |
| 2 |
| 1 |
| 2 |
(3)2(3x-1)-3(x+5)=1;
(4)
| x-1 |
| 4 |
| 2x+1 |
| 3 |
(1)7x-6=4x+6,
7x-4x=6+6,
3x=12,
x=4;
(2)y+
=
y+2;
y-
y=2-
,
y=
,
y=3;
(3)2(3x-1)-3(x+5)=1,
6x-2-3x-15=1,
6x-3x=1+2+15,
3x=18,
x=6;
(4)去分母得:3(x-1)-4(2x+1)=12,
3x-3-8x-4=12,
3x-8x=12+3+4,
-5x=19,
x=-
.
7x-4x=6+6,
3x=12,
x=4;
(2)y+
| 1 |
| 2 |
| 1 |
| 2 |
y-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 3 |
| 2 |
y=3;
(3)2(3x-1)-3(x+5)=1,
6x-2-3x-15=1,
6x-3x=1+2+15,
3x=18,
x=6;
(4)去分母得:3(x-1)-4(2x+1)=12,
3x-3-8x-4=12,
3x-8x=12+3+4,
-5x=19,
x=-
| 19 |
| 5 |
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