Applicare la formula: $-\left(a+b\right)$$=-a-b$, dove $a=\sqrt{10}$, $b=-\pi $, $-1.0=-1$ e $a+b=\sqrt{10}-\pi $

Applicare la formula: $\frac{a}{b}+c$$=\frac{a+cb}{b}$, dove $a/b+c=\frac{13}{2}-\sqrt{10}+\pi $, $a=13$, $b=2$, $c=\pi $ e $a/b=\frac{13}{2}$

Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=-\sqrt{10}$, $b=13+\pi \cdot 2$, $c=2$, $a+b/c=\frac{13+\pi \cdot 2}{2}-\sqrt{10}$ e $b/c=\frac{13+\pi \cdot 2}{2}$

Applicare la formula: $ab$$=ab$, dove $ab=- 2\sqrt{10}$, $a=-1$ e $b=2$