4r-2/5=0

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Solution for 4r-2/5=0 equation: 



4r-2/5=0

We multiply all the terms by the denominator


4r*5-2=0

Wy multiply elements

20r-2=0

We move all terms containing r to the left, all other terms to the right

20r=2

r=2/20

r=1/10

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