1/5x+5x=7(18-x)

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Solution for 1/5x+5x=7(18-x) equation: 


x in (-oo:+oo)

(1/5)*x+5*x = 7*(18-x) // - 7*(18-x)

(1/5)*x-(7*(18-x))+5*x = 0

(1/5)*x-7*(18-x)+5*x = 0

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

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

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

36*x+25*x-630 = 0

61*x-630 = 0

(61*x-630)/5 = 0

(61*x-630)/5 = 0 // * 5

61*x-630 = 0

61*x-630 = 0 // + 630

61*x = 630 // : 61

x = 630/61

x = 630/61

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