7-18=z/-7 - solution

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Solution for 7-18=z/-7 equation:

z in (-oo:+oo)

7-18 = z/(-7) // - z/(-7)

7-(z/(-7))-18 = 0

1/7*z-11 = 0 // + 11

1/7*z = 11 // : 1/7

z = 11/1/7

z = 77

z = 77

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