4+u/3=7

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Solution for 4+u/3=7 equation: 


u in (-oo:+oo)

u/3+4 = 7 // - 7

u/3-7+4 = 0

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

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

u = 3/1/3

u = 9

u = 9

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