10/19=8/r

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Solution for 10/19=8/r equation: 


D( r )

r = 0

r = 0

r = 0

r in (-oo:0) U (0:+oo)

10/19 = 8/r // - 8/r

10/19-(8/r) = 0

10/19-8*r^-1 = 0

-8*r^-1 = -10/19 // : -8

r^-1 = 5/76

-1 < 0

1/(r^1) = 5/76 // * r^1

1 = 5/76*r^1 // : 5/76

76/5 = r^1

r = 76/5

r = 76/5

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