3/4=z/7

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Solution for 3/4=z/7 equation: 


z in (-oo:+oo)

3/4 = z/7 // - z/7

3/4-(z/7) = 0

3/4-1/7*z = 0 // - 3/4

-1/7*z = -3/4 // : -1/7

z = -3/4/(-1/7)

z = 21/4

z = 21/4

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