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4/10b=86
We move all terms to the left:
4/10b-(86)=0
Domain of the equation: 10b!=0We multiply all the terms by the denominator
b!=0/10
b!=0
b∈R
-86*10b+4=0
Wy multiply elements
-860b+4=0
We move all terms containing b to the left, all other terms to the right
-860b=-4
b=-4/-860
b=1/215
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