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19=4(b-7)
We move all terms to the left:
19-(4(b-7))=0
We calculate terms in parentheses: -(4(b-7)), so:We get rid of parentheses
4(b-7)
We multiply parentheses
4b-28
Back to the equation:
-(4b-28)
-4b+28+19=0
We add all the numbers together, and all the variables
-4b+47=0
We move all terms containing b to the left, all other terms to the right
-4b=-47
b=-47/-4
b=11+3/4
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