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2(a+4)/2=12
We simplify the equation to the form, which is simple to understand
2(a+4)/2=12
Reorder the terms in parentheses
+(+2a+8)/2=12
Reorder the terms in parentheses
+(+1a+4)=12
Remove unnecessary parentheses
+1a+4=+12
We move all terms containing a to the left and all other terms to the right.
+1a=+12-4
We simplify left and right side of the equation.
+1a=+8
We divide both sides of the equation by 1 to get a.
a=8
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