z/10-1=7 - solution

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Solution for z/10-1=7 equation:

z in (-oo:+oo)

z/10-1 = 7 // - 7

z/10-7-1 = 0

1/10*z-8 = 0 // + 8

1/10*z = 8 // : 1/10

z = 8/1/10

z = 80

z = 80

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