r/5=20/8

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Solution for r/5=20/8 equation: 


r in (-oo:+oo)

r/5 = 20/8 // - 20/8

r/5-(20/8) = 0

r/5-5/2 = 0

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

1/5*r = 5/2 // : 1/5

r = 5/2/1/5

r = 25/2

r = 25/2

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