If 2x+2y+10=30 then what is x+y?

Answer 1

2x+2y+10=30

Subtract 10 from both sides and simplify

2x+2y+10-10=30-10

2x+2y=20

Next divide through both sides of the equation by 2 and simplify

2x/2+2y/2=20/2

x+y=10

Answer 2