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2/5b=40
We move all terms to the left:
2/5b-(40)=0
Domain of the equation: 5b!=0We multiply all the terms by the denominator
b!=0/5
b!=0
b∈R
-40*5b+2=0
Wy multiply elements
-200b+2=0
We move all terms containing b to the left, all other terms to the right
-200b=-2
b=-2/-200
b=1/100
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