Z/4-7=-2 - solution

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Solution for Z/4-7=-2 equation:

Z in (-oo:+oo)

Z/4-7 = -2 // + 2

Z/4-7+2 = 0

1/4*Z-5 = 0 // + 5

1/4*Z = 5 // : 1/4

Z = 5/1/4

Z = 20

Z = 20

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