Select all of the order pair solutions to 4 - x + 20 = y - 10
(2,3)
(4,30)
(24,10)
(1,5)
4 - x + 20 = y - 10 simplify
24 - x = y - 10 rearrange as
34 = x + y
And ( 4, 30) , (24,10) are the only solutions where x + y = 34
