Hello there!
(65x + 61y) - (16x - 12y)
We wanna start by distributing the negative sign to those on the right side.
65x + 61y - 16x + 12y
Now we can combine the like terms
65x - 16x + 61y + 12y
= 49x + 73y
As always, it is my pleasure to help students like you!