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4/b=1
We move all terms to the left:
4/b-(1)=0
Domain of the equation: b!=0We multiply all the terms by the denominator
b∈R
-1*b+4=0
We add all the numbers together, and all the variables
-1b+4=0
We move all terms containing b to the left, all other terms to the right
-b=-4
b=-4/-1
b=+4
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