Question

5/6+1/5=
1/9+4/3=
3/5+2/3-1/15=
1/2+3/4+2/3=

Answer 1

$\frac{31}{30}$
$\frac{13}{9}$
$\frac{19}{15} - \frac{1}{15} = \frac{18}{15}$
$\frac{5}{4}+ \frac{2}{3} = \frac{15+8}{12} = \frac{23}{12}$