5/7r=20

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Solution for 5/7r=20 equation: 


r in (-oo:+oo)

(5/7)*r = 20 // - 20

(5/7)*r-20 = 0

5/7*r-20 = 0 // + 20

5/7*r = 20 // : 5/7

r = 20/5/7

r = 28

r = 28

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