-20=-5+3x
To solve for x, we first want to get rid of the terms on the right side of the equation.
-20 = -5 + 3x
Add 5 to both sides:
-20 + 5 = 3x
-15 = 3x
Now divide both sides by 3 to solve for x:
-15/3 = x
-5 = x
Therefore, x = -5.