Question

help me please

Answer 1

6

Answer 2

\[\frac{a}{b}=\frac{c}{d}\]
\[ab=cd\]

Answer 3

apply this rule and tell me what you get ?

Answer 4

You have \[\frac{z}{9}=\frac{2}{3}\]

Answer 5

\(3z=18\) means \(z=\frac{18}{3}=6\)