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(7b-5)-2(3b+4)=-4
We simplify the equation to the form, which is simple to understand
(7b-5)-2(3b+4)=-4
Remove unnecessary parentheses
7b-5-2*(3b+4)=-4
Reorder the terms in parentheses
7b-5+(-6b-8)=-4
Remove unnecessary parentheses
+7b-5-6b-8=-4
We move all terms containing b to the left and all other terms to the right.
+7b-6b=-4+5+8
We simplify left and right side of the equation.
+1b=+9
We divide both sides of the equation by 1 to get b.
b=9
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