x/3+3x=90 - solution

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Solution for x/3+3x=90 equation:

x in (-oo:+oo)

x/3+3*x = 90 // - 90

x/3+3*x-90 = 0

10/3*x-90 = 0 // + 90

10/3*x = 90 // : 10/3

x = 90/10/3

x = 27

x = 27

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