Move all terms containing s to the left side of the equation.
Subtract 5s from both sides of the equation.
Subtract 5s from 4s.
Move all terms not containing s to the right side of the equation.
Add 12 to both sides of the equation.
Add 15 and 12.
Multiply each term in -s=27 by -1
Multiply each term in -s=27 by -1.
Multiply -1 by -1.
Multiply s by 1.
Multiply 27 by -1.
Solve for s 4s-12=5s+15