(3r)-(r/2)=60

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Solution for (3r)-(r/2)=60 equation: 


r in (-oo:+oo)

3*r-(r/2) = 60 // - 60

3*r-(r/2)-60 = 0

5/2*r-60 = 0 // + 60

5/2*r = 60 // : 5/2

r = 60/5/2

r = 24

r = 24

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