2 answers:
9 - (a - 7)
Note that - = -1
First, distribute - 1 to all terms within the parenthesis
-1(a - 7) = -a + 7
9 - a + 7
Combine like terms
9 + 7 = 16
-a + 16, or A. 16 - a is your answer
hope this helps
9 - (a - 7)
a = -1
9 + 7 = 16
The correct answer is A. 16 - a
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