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-9(3b+3)+(28b-4)=0
We simplify the equation to the form, which is simple to understand
-9(3b+3)+(28b-4)=0
Reorder the terms in parentheses
+(-27b-27)+(28b-4)=0
Remove unnecessary parentheses
-27b-27+(+28b-4+)=0
Remove unnecessary parentheses
-27b-27+28b-4=0
We move all terms containing b to the left and all other terms to the right.
-27b+28b=0+27+4
We simplify left and right side of the equation.
+1b=+31
We divide both sides of the equation by 1 to get b.
b=31
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