Applicare la formula: $\frac{a}{a}$$=1$, dove $a=b^2$ e $a/a=\frac{42a^2b^2c^5}{6ab^2c^4}$

Applicare la formula: $\frac{a^n}{a}$$=a^{\left(n-1\right)}$, dove $a^n/a=\frac{42a^2c^5}{6ac^4}$, $a^n=a^2$ e $n=2$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=c^4$, $a^m=c^5$, $a=c$, $a^m/a^n=\frac{42ac^5}{6c^4}$, $m=5$ e $n=4$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=42ac$, $a=42$, $b=ac$, $c=6$ e $ab/c=\frac{42ac}{6}$