Question

ayúdeme en esta por fa

Answer 1

$\frac{m^2}{3} - \frac{n^2}{2} + \frac{r^2}{6}: \\ \\ Hallemos \ el \ mcm: \\ 3-2-6|2 \\ 3-1-3|3 \\ 1-1-1|1 \ \ mcm= \ 2x3= \ \boxed{6} \\ \\ \frac{(6:3)m^2-(6:2)n^2+(6:6)r^2}{6} = \\ \\ \boxed{ \frac{2m^2-3n^2+r^2}{6} }$