Answer:
28x+8y-8
Explanation:
Follow the orders of PEMDAS: (parenthesis, exponents, multiplication, division, addition, subtraction)
If an equation you need to solve has parentheses, simplify the parentheses (most often using distribution) and then solve as you normally would. Simplify both sides of the equation as much as possible using the order of operations (distribute, combine like terms, etc.).