13+7+n=28Add 13 and 7.20+n=28Move all terms not containing n to the right side of the equation.Tap for more steps…Subtract 20 from both sides of the equation.n=28-20Subtract 20 from 28.n=8n=8 Solve for n 13+7+n=28 Solving MATH problems We can solve all math problems. Get help on the web or with our math app