-1/4r+1/5=-2/5

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Solution for -1/4r+1/5=-2/5 equation: 



-1/4r+1/5=-2/5

We move all terms to the left:

-1/4r+1/5-(-2/5)=0



Domain of the equation: 4r!=0

r!=0/4

r!=0

r∈R



We get rid of parentheses

-1/4r+1/5+2/5=0

We calculate fractions

There is no solution for this equation

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