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-7(2a+6)=-2-6a
We simplify the equation to the form, which is simple to understand
-7(2a+6)=-2-6a
Reorder the terms in parentheses
+(-14a-42)=-2-6a
Remove unnecessary parentheses
-14a-42=-2-6a
We move all terms containing a to the left and all other terms to the right.
-14a+6a=-2+42
We simplify left and right side of the equation.
-8a=+40
We divide both sides of the equation by -8 to get a.
a=-5
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