x+x/5+4+(x/5+4)/7=66

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Solution for x+x/5+4+(x/5+4)/7=66 equation: 


x in (-oo:+oo)

(x/5+4)/7+x+x/5+4 = 66 // - 66

(x/5+4)/7+x+x/5-66+4 = 0

(1/5*x+4)/7+x+x/5-66+4 = 0

(5*(1/5*x+4))/(5*7)+(5*7*x)/(5*7)+(7*x)/(5*7)+(-66*5*7)/(5*7)+(4*5*7)/(5*7) = 0

5*(1/5*x+4)+5*7*x+7*x-66*5*7+4*5*7 = 0

36*x+7*x-2310+20+140 = 0

43*x-2310+20+140 = 0

43*x-2290+140 = 0

43*x-2150 = 0

(43*x-2150)/(5*7) = 0

(43*x-2150)/(5*7) = 0 // * 5*7

43*x-2150 = 0

43*x-2150 = 0 // + 2150

43*x = 2150 // : 43

x = 2150/43

x = 50

x = 50

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