1.2x-4y=28 solve for y
2x -4y= 28⇒ -4y= 28 -2x⇒ y= (28 -2x)/ (-4)⇒ y= 28/(-4) -(2x)/ (-4)⇒ y= -7 + 1/2xThe final answer is y= -7 + 1/2x~