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-2(b-8)+7(b-4)=-47
We simplify the equation to the form, which is simple to understand
-2(b-8)+7(b-4)=-47
Reorder the terms in parentheses
+(-2b+16)+7*(b-4)=-47
Remove unnecessary parentheses
-2b+16+7+*(+b-4+)=-47
Reorder the terms in parentheses
-2b+16+(+7b-28)=-47
Remove unnecessary parentheses
-2b+16+7b-28=-47
We move all terms containing b to the left and all other terms to the right.
-2b+7b=-47-16+28
We simplify left and right side of the equation.
+5b=-35
We divide both sides of the equation by 5 to get b.
b=-7
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