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-(3b-15)=12b+15
We simplify the equation to the form, which is simple to understand
-(3b-15)=12b+15
Remove unnecessary parentheses
-3b+15=12b+15
We move all terms containing b to the left and all other terms to the right.
-3b-12b=+15-15
We simplify left and right side of the equation.
-15b=0
We divide both sides of the equation by -15 to get b.
b=-0
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