(1)4x+y=2
y=2-4x
(2)y-5x=7
y=7+5x
(3)3x/2-2y=3
2y=3x/2-3
2y=(3x-6)/2
y=(3x--6)/2×1/2
y=(3x-6)/4
y=3x/4-3/2
(4)4x+2y=-8x-5y
12x=-7y
y=-12x/7
(1)4x+y=2
y=2-4x
(2)y-5x=7
y=7+5x
(3)3x/2-2y=3
2y=3x/2-3
2y=(3x-6)/2
y=(3x--6)/2×1/2
y=(3x-6)/4
y=3x/4-3/2
(4)4x+2y=-8x-5y
12x=-7y
y=-12x/7