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(11b-4)-5(2b+1)=-7
We move all terms to the left:
(11b-4)-5(2b+1)-(-7)=0
We add all the numbers together, and all the variables
(11b-4)-5(2b+1)+7=0
We multiply parentheses
(11b-4)-10b-5+7=0
We get rid of parentheses
11b-10b-4-5+7=0
We add all the numbers together, and all the variables
b-2=0
We move all terms containing b to the left, all other terms to the right
b=2
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