y=-5/2x-15 solve for x
With only this one equation, you cannot solve for
a single value of x. All you can do is solve for x
in terms of y.
y = -5/2 x - 15
Add 15 to both sides.
y + 15 = -5/2 x - 15 + 15
y + 15 = -5/2 x
Multiply both sides by 2.
(y + 15) * 2 = (-5/2 x) * 2
(y + 15) * 2 = -5x
Now, divide both sides by -5.
(y + 15) * 2/-5 = (-5x/ -5)
-2/5 * (y + 15) = x
Perform the multiplication on the left side.
-2/5 y - 6 = x