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-7(3b+3)+(22b-9)=0
We simplify the equation to the form, which is simple to understand
-7(3b+3)+(22b-9)=0
Reorder the terms in parentheses
+(-21b-21)+(22b-9)=0
Remove unnecessary parentheses
-21b-21+(+22b-9+)=0
Remove unnecessary parentheses
-21b-21+22b-9=0
We move all terms containing b to the left and all other terms to the right.
-21b+22b=0+21+9
We simplify left and right side of the equation.
+1b=+30
We divide both sides of the equation by 1 to get b.
b=30
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