Multiply -3 by 4.
Move all terms not containing s to the right side of the equation.
Add 12 to both sides of the equation.
Add 20 and 12.
Divide each term by 2 and simplify.
Divide each term in 2s=32 by 2.
Cancel the common factor of 2.
Cancel the common factor.
Divide s by 1.
Divide 32 by 2.
Solve for s 2(s)-3*4=20