Question

A)5/7-8/3

B)10/9+5/2

Answer 1

Resposta:

$\frac{5}{7} - \frac{8}{3} = \\ \frac{15}{21} - \frac{56}{21} = \\ 15 - 56 = \\ - 41$

$\frac{10}{9} + \frac{5}{2} = \\ \frac{20}{18} + \frac{45}{18} = \\ \frac{65}{18}$

Espero ter ajudado ;))