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51+83+(7b-10)=180
We move all terms to the left:
51+83+(7b-10)-(180)=0
We add all the numbers together, and all the variables
(7b-10)-46=0
We get rid of parentheses
7b-10-46=0
We add all the numbers together, and all the variables
7b-56=0
We move all terms containing b to the left, all other terms to the right
7b=56
b=56/7
b=8
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