x+2/5x=42 - solution

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Solution for x+2/5x=42 equation:

x in (-oo:+oo)

x+(2/5)*x = 42 // - 42

x+(2/5)*x-42 = 0

7/5*x-42 = 0 // + 42

7/5*x = 42 // : 7/5

x = 42/7/5

x = 30

x = 30

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