Verified Answer :

TSO

First do the multiplication inside the parenthesis

(-y+15) + (7.2y-9)

Remove the parenthesis now

-y+15+7.2y-9

Simplify:

6.2y +6

So your final answer is \(\boxed{\sf{6.2y+6}}\)

first remove the ( ) since there is a + sign before the ( ) the signs will not change

work inside the ( )

-y+15+ 7.2y-9

6.2y+6