Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}$, dove $a=1$, $b=1$ e $a/b=\frac{1}{1}$

Applicare la formula: $\frac{a}{b}+c$$=\frac{a+cb}{b}$, dove $a/b+c=\frac{1}{-0.5}+1$, $a=1$, $b=-\frac{1}{2}$, $c=1$ e $a/b=\frac{1}{-0.5}$

Applicare la formula: $ab$$=ab$, dove $ab=1\cdot -0.5$, $a=1$ e $b=-\frac{1}{2}$

Applicare la formula: $a+b$$=a+b$, dove $a=1$, $b=-\frac{1}{2}$ e $a+b=1-0.5$

Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}$, dove $a=\frac{1}{2}$, $b=-\frac{1}{2}$ e $a/b=\frac{0.5}{-0.5}$