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2/7b=10
We move all terms to the left:
2/7b-(10)=0
Domain of the equation: 7b!=0We multiply all the terms by the denominator
b!=0/7
b!=0
b∈R
-10*7b+2=0
Wy multiply elements
-70b+2=0
We move all terms containing b to the left, all other terms to the right
-70b=-2
b=-2/-70
b=1/35
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