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3 (b+9)=3 (b-7)
We simplify the equation to the form, which is simple to understand
3(b+9)=3(b-7)
Reorder the terms in parentheses
+(+3b+27)=3*(b-7)
Remove unnecessary parentheses
+3b+27=+3+*(+b-7+)
Reorder the terms in parentheses
+3b+27=+(+3b-21)
Remove unnecessary parentheses
+3b+27=+3b-21
We move all terms containing b to the left and all other terms to the right.
+3b-3b=-21-27
We simplify left and right side of the equation.
b=-48
0=-48
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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