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-a+12a=5(1-7a)-5(a+1)
We simplify the equation to the form, which is simple to understand
-a+12a=5(1-7a)-5(a+1)
Reorder the terms in parentheses
-a+12a=+(+5-35a)-5*(a+1)
Remove unnecessary parentheses
-a+12a=+5-35a-5+*(+a+1+)
Reorder the terms in parentheses
-a+12a=+5-35a+(-5a-5)
Remove unnecessary parentheses
-a+12a=+5-35a-5a-5
We move all terms containing a to the left and all other terms to the right.
-1a+12a+35a+5a=+5-5
We simplify left and right side of the equation.
+51a=0
We divide both sides of the equation by 51 to get a.
a=0
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