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-2+8a=2(a-7)
We simplify the equation to the form, which is simple to understand
-2+8a=2(a-7)
Reorder the terms in parentheses
-2+8a=+(+2a-14)
Remove unnecessary parentheses
-2+8a=+2a-14
We move all terms containing a to the left and all other terms to the right.
+8a-2a=-14+2
We simplify left and right side of the equation.
+6a=-12
We divide both sides of the equation by 6 to get a.
a=-2
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