Mark M. answered 12/13/15
Tutor
5.0
(278)
Mathematics Teacher - NCLB Highly Qualified
(2x + 5y) + (3x - 2y) parenthesis are just grouping
2x + 5y + 3x - 2y commutative property of addition
2x + 3x + 5y - 2y combine like terms
5x + 3y