Answer:
9
Explanation:
8 + (27 : 3) = 8 + ? (we replace "?" with x)
8 + (27 : 3) = 8 + x (we solve the parenthesis)
8 + 9 = 8 + x (we subtract 8 from both sides)
9 = x (put 9 in the answer box)
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check
8 + (27 : 3) = 8 + 9
8 + 9 = 8 + 9
17 = 17
THE ANSWER IS GOOD