u/3+9=18

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Solution for u/3+9=18 equation: 


u in (-oo:+oo)

u/3+9 = 18 // - 18

u/3-18+9 = 0

1/3*u-9 = 0 // + 9

1/3*u = 9 // : 1/3

u = 9/1/3

u = 27

u = 27

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