(5x-4)/4+(9x-9)/7=18

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Solution for (5x-4)/4+(9x-9)/7=18 equation: 


x in (-oo:+oo)

(5*x-4)/4+(9*x-9)/7 = 18 // - 18

(5*x-4)/4+(9*x-9)/7-18 = 0

(7*(5*x-4))/(4*7)+(4*(9*x-9))/(4*7)+(-18*4*7)/(4*7) = 0

7*(5*x-4)+4*(9*x-9)-18*4*7 = 0

71*x-504-64 = 0

71*x-568 = 0

(71*x-568)/(4*7) = 0

(71*x-568)/(4*7) = 0 // * 4*7

71*x-568 = 0

71*x-568 = 0 // + 568

71*x = 568 // : 71

x = 568/71

x = 8

x = 8

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