Applicare la formula: $a^b$$=a^b$, dove $a=\frac{2}{3}$, $b=2$ e $a^b=\left(\frac{2}{3}\right)^2$

Applicare la formula: $\frac{a}{b}c$$=\frac{ca}{b}$, dove $a=4$, $b=9$, $c=3$, $a/b=\frac{4}{9}$ e $ca/b=3\cdot \left(\frac{4}{9}\right)x$

Applicare la formula: $ab$$=ab$, dove $ab=3\cdot 4$, $a=3$ e $b=4$

Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}$, dove $a=12$, $b=9$ e $a/b=\frac{12}{9}$