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-1/5b=-4/5
We move all terms to the left:
-1/5b-(-4/5)=0
Domain of the equation: 5b!=0We get rid of parentheses
b!=0/5
b!=0
b∈R
-1/5b+4/5=0
We calculate fractions
=0
b=0/1
b=0
Równanie nie ma rozwiązania
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