Z/7-1=3

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Solution for Z/7-1=3 equation: 


Z in (-oo:+oo)

Z/7-1 = 3 // - 3

Z/7-3-1 = 0

1/7*Z-4 = 0 // + 4

1/7*Z = 4 // : 1/7

Z = 4/1/7

Z = 28

Z = 28

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