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(B/7B-1=13
We move all terms to the left:
(B/7B-1-(13)=0
Domain of the equation: 7B-1-13!=0We multiply all the terms by the denominator
We move all terms containing B to the left, all other terms to the right
7B!=14
B!=14/7
B!=2
B∈R
(B=0
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