4/9r=84

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Solution for 4/9r=84 equation: 


r in (-oo:+oo)

(4/9)*r = 84 // - 84

(4/9)*r-84 = 0

4/9*r-84 = 0 // + 84

4/9*r = 84 // : 4/9

r = 84/4/9

r = 189

r = 189

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