= 4s - 21 First, simplify to / Your problem should look like: Second, multiply both sides by 2. / Your problem should look like: Third, subtract 8s from both sides. / Your problem should look like: Fourth, simplify s - 8s to -7s. / Your problem should look like: Fifth, divide both sides by -7. / Your problem should look like: Sixth, simplify to / Your problem should look like: Seventh, simplify to 6. / Your problem should look like: