2/3r=30

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Solution for 2/3r=30 equation: 


r in (-oo:+oo)

(2/3)*r = 30 // - 30

(2/3)*r-30 = 0

2/3*r-30 = 0 // + 30

2/3*r = 30 // : 2/3

r = 30/2/3

r = 45

r = 45

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