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Answer :

Simplify the equation 7/z=84/12 by cross product of the numerator and denominator.

[tex]\begin{gathered} \frac{7}{z}=\frac{84}{12} \\ 7\cdot12=84\cdot z \\ z=\frac{7\cdot12}{84} \\ =\frac{84}{84} \\ =1 \end{gathered}[/tex]

So value of z is 1.

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