-15+5b-(3+2)=1-2b
First, solve the expression inside the parenthesis:
-15+5b-(5)=1-2b
-15+5b-5=1-2b
b values in one side of the equation, and number values on the other side:
5b+2b=1+15+5
7b= 21
Divide both sides by 7
7b/7 =21/7
b= 3
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