Answer:
= 9
Step-by-step explanation:
First work out the ones that's in the parentheses.
8 - 4 = 4
15 - 10 = 5
(4) + (5) = 9
9 :)
(8 - 4) = 4
(15 - 10) = 5
That added together equals....
5 + 4 = 9
