15=(6u-7)/4+(9u+8)/8

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Solution for 15=(6u-7)/4+(9u+8)/8 equation: 


u in (-oo:+oo)

15 = (6*u-7)/4+(9*u+8)/8 // - (6*u-7)/4+(9*u+8)/8

15-((6*u-7)/4)-((9*u+8)/8) = 0

(-1*(6*u-7))/4+(-1*(9*u+8))/8+15 = 0

(-1*8*(6*u-7))/(4*8)+(-1*4*(9*u+8))/(4*8)+(4*8*15)/(4*8) = 0

4*8*15-1*8*(6*u-7)-1*4*(9*u+8) = 0

24-84*u+480 = 0

504-84*u = 0

(504-84*u)/(4*8) = 0

(504-84*u)/(4*8) = 0 // * 4*8

504-84*u = 0

504-84*u = 0 // - 504

-84*u = -504 // : -84

u = -504/(-84)

u = 6

u = 6

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