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-7(1-a)=-7(a-1)
We simplify the equation to the form, which is simple to understand
-7(1-a)=-7(a-1)
Reorder the terms in parentheses
+(-7+7a)=-7*(a-1)
Remove unnecessary parentheses
-7+7a=-7+*(+a-1+)
Reorder the terms in parentheses
-7+7a=+(-7a+7)
Remove unnecessary parentheses
-7+7a=-7a+7
We move all terms containing a to the left and all other terms to the right.
+7a+7a=+7+7
We simplify left and right side of the equation.
+14a=+14
We divide both sides of the equation by 14 to get a.
a=1
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