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2(2b-5b)-9=-3
We move all terms to the left:
2(2b-5b)-9-(-3)=0
We add all the numbers together, and all the variables
2(-3b)-9-(-3)=0
We add all the numbers together, and all the variables
2(-3b)-6=0
We multiply parentheses
-6b-6=0
We move all terms containing b to the left, all other terms to the right
-6b=6
b=6/-6
b=-1
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