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b-205=-7b-5
We move all terms to the left:
b-205-(-7b-5)=0
We get rid of parentheses
b+7b+5-205=0
We add all the numbers together, and all the variables
8b-200=0
We move all terms containing b to the left, all other terms to the right
8b=200
b=200/8
b=25
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