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8-a/12=-6
We move all terms to the left:
8-a/12-(-6)=0
We add all the numbers together, and all the variables
-a/12+14=0
We multiply all the terms by the denominator
-a+14*12=0
We add all the numbers together, and all the variables
-1a+168=0
We move all terms containing a to the left, all other terms to the right
-a=-168
a=-168/-1
a=+168
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