(2r+6)/8=(4r-1)/15

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Solution for (2r+6)/8=(4r-1)/15 equation: 


r in (-oo:+oo)

(2*r+6)/8 = (4*r-1)/15 // - (4*r-1)/15

(2*r+6)/8-((4*r-1)/15) = 0

(2*r+6)/8+(-1*(4*r-1))/15 = 0

(15*(2*r+6))/(8*15)+(-1*8*(4*r-1))/(8*15) = 0

15*(2*r+6)-1*8*(4*r-1) = 0

98-2*r = 0

(98-2*r)/(8*15) = 0

(98-2*r)/(8*15) = 0 // * 8*15

98-2*r = 0

98-2*r = 0 // - 98

-2*r = -98 // : -2

r = -98/(-2)

r = 49

r = 49

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