What is this equal to (a + 8)/(2) = (a - 4)/(8) ​

Question

What is this equal to

`(a + 8)/(2) = (a - 4)/(8)`
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Answer 1

The answer is bc you do 8(a+8)=2(a-4) then it turns to 8a+64=2(a-4) to 8a-2a+64=-8 to 6a=-8-64 to 6a=-72 to the answer A=-12