Respuesta:
[tex]\frac{9}{28}[/tex] ; [tex]\frac{45}{4}[/tex] ; [tex]\frac{5}{12}[/tex] ; [tex]\frac{5}{2}[/tex]
Explicación paso a paso:
1) [tex]\frac{3}{8} x \frac{6}{7} = \frac{18}{56} = \frac{9}{28}[/tex]
2) [tex]\frac{10}{2} / \frac{4}{9} = \frac{90}{8} = \frac{45}{4}[/tex]
3) [tex]\frac{6}{8} -\frac{1}{3} =\frac{10}{24} =\frac{5}{12}[/tex]
4) [tex]\frac{9}{5} + \frac{7}{10} = \frac{25}{10} =\frac{5}{2}[/tex]
