Answer:
b) a = -10
Explanation:
a + (-7) = -17
simplify
a - 7 = -17
add 7 to both sides of the equation
a - 7 + 7 = -17 + 7
a = -17 + 7
a = -10
the answer is A
-17 - (-7) = -24
a = -24
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