Question

a) de 7/8 restar 1/5
b) restar 1/4 de 7/10

Answer 1

$a) \frac{7}{8}- \frac{1}{5} = \\ \\ \frac{35}{40}- \frac{8}{40} = \\ \\ \frac{35-8}{40} = \boxed{ \frac{27}{40} }$

$b) \frac{7}{10} - \frac{1}{4} = \\ \\ \frac{28}{40} - \frac{10}{40} = \\ \\ \frac{28-10}{40} = \frac{18}{40} = \boxed{ \frac{9}{20} }$

Espero que te sirva, salu2!!!!