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2b-4(10)=5(b-5)
We move all terms to the left:
2b-4(10)-(5(b-5))=0
We calculate terms in parentheses: -(5(b-5)), so:We get rid of parentheses
5(b-5)
We multiply parentheses
5b-25
Back to the equation:
-(5b-25)
2b-5b+25-410=0
We add all the numbers together, and all the variables
-3b-385=0
We move all terms containing b to the left, all other terms to the right
-3b=385
b=385/-3
b=-128+1/3
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