Applicare la formula: $x+a=b$$\to x=b-a$, dove $a=x^4$, $b=46$, $x+a=b=x^4+y^9=46$, $x=y^9$ e $x+a=x^4+y^9$

Applicare la formula: $x^a=b$$\to \left(x^a\right)^{inverse\left(a\right)}=b^{inverse\left(a\right)}$, dove $a=9$, $b=46-x^4$, $x^a=b=y^9=46-x^4$, $x=y$ e $x^a=y^9$

Applicare la formula: $\left(x^a\right)^b$$=x$, dove $a=9$, $b=1$, $x^a^b=\sqrt[9]{y^9}$, $x=y$ e $x^a=y^9$