2/5(5r+15)=18

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Solution for 2/5(5r+15)=18 equation: 


r in (-oo:+oo)

(2/5)*(5*r+15) = 18 // - 18

(2/5)*(5*r+15)-18 = 0

2/5*(5*r+15)-18 = 0

2/5*(5*r+15)-18 = 0

2*r-12 = 0

2*r-12 = 0

2*r-12 = 0 // + 12

2*r = 12 // : 2

r = 12/2

r = 6

r = 6

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