Question

Qué número sumado a 1/5 da 8/9?

Answer 1

1/5 + x = 8/9

x = 8/9 - 1/5

x = ((8)(5)-(9))/45

x = (40-9)/45

x = 31/45

Answer 2

Sea x el numero buscado

$x + \frac{1}{5} = \frac{8}{9}$

$x = \frac{8}{9} - \frac{1}{5}$

$x = \frac{40-9}{45}$

$x = \frac{31}{45}$