z/7-2=-1

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Solution for z/7-2=-1 equation: 


z in (-oo:+oo)

z/7-2 = -1 // + 1

z/7-2+1 = 0

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

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

z = 1/1/7

z = 7

z = 7

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