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-2=(a+4)+8
We move all terms to the left:
-2-((a+4)+8)=0
We calculate terms in parentheses: -((a+4)+8), so:We get rid of parentheses
(a+4)+8
We get rid of parentheses
a+4+8
We add all the numbers together, and all the variables
a+12
Back to the equation:
-(a+12)
-a-12-2=0
We add all the numbers together, and all the variables
-1a-14=0
We move all terms containing a to the left, all other terms to the right
-a=14
a=14/-1
a=-14
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