(1)2分之3x+2y=1
3x+4y=2
4y=2-3x
y=1/2-3/4x
(2)4分之1x+4分之7y=2
x+7y=8
7y=8-x
y=8/7-x/7
(3)5x-3y=x+2y
5y=4x
y=4x/5
(4)2(3y-3)=6x+4
6y-6=6x+4
6y=6x+10
y=x+5/3
(1)2分之3x+2y=1
3x+4y=2
4y=2-3x
y=1/2-3/4x
(2)4分之1x+4分之7y=2
x+7y=8
7y=8-x
y=8/7-x/7
(3)5x-3y=x+2y
5y=4x
y=4x/5
(4)2(3y-3)=6x+4
6y-6=6x+4
6y=6x+10
y=x+5/3