Answer:
a = -10
Explanation:
5 = 10 + a/2
subtract 10 from both sides so 5-10 and 10-10 which then leaves -5 = a/2
then divided a/2 by multiplying the reciprocal 2/a times -5 and a/2 times 2/a
which then leaves you with a = -10
-10
10 + a/2 = 5
-10 -10
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a/2 = -5
x2 x2
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