3x-2y=18 solve for y
So the idea is we want to isolate y on one side of the equation.
So we can add or subtract terms from both sides of the equations. So let's subtract 3x for both sides.
-2y=18+3x
Okay, y term is on the left side of the equation by itself. But we don't want the value of -2y, we want the value of y. So we divided both sides by -2.
(-2/-2)y=-9-(3/2)x
of course -2/-2=1
Thus
y=-9-(3/2)x or y=-(3/2)x-9
