4/9=(r+3)/45

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Solution for 4/9=(r+3)/45 equation: 


r in (-oo:+oo)

4/9 = (r+3)/45 // - (r+3)/45

4/9-((r+3)/45) = 0

(-1*(r+3))/45+4/9 = 0

(-1*9*(r+3))/(9*45)+(4*45)/(9*45) = 0

4*45-1*9*(r+3) = 0

153-9*r = 0

(153-9*r)/(9*45) = 0

(153-9*r)/(9*45) = 0 // * 9*45

153-9*r = 0

153-9*r = 0 // - 153

-9*r = -153 // : -9

r = -153/(-9)

r = 17

r = 17

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