1/5x+x=90 - solution

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Solution for 1/5x+x=90 equation:

x in (-oo:+oo)

(1/5)*x+x = 90 // - 90

(1/5)*x+x-90 = 0

6/5*x-90 = 0 // + 90

6/5*x = 90 // : 6/5

x = 90/6/5

x = 75

x = 75

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