z/7=1/21

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Solution for z/7=1/21 equation: 


z in (-oo:+oo)

z/7 = 1/21 // - 1/21

z/7-(1/21) = 0

z/7-1/21 = 0

1/7*z-1/21 = 0 // + 1/21

1/7*z = 1/21 // : 1/7

z = 1/21/1/7

z = 1/3

z = 1/3

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