z/5-21/4

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Solution for z/5-21/4 equation: 


z in (-oo:+oo)

z/5-(21/4) = 0

z/5-21/4 = 0

1/5*z-21/4 = 0 // + 21/4

1/5*z = 21/4 // : 1/5

z = 21/4/1/5

z = 105/4

z = 105/4

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