Question

socorrrrrrrrrrrrrrrrrrrrrrrrrrrroooooooo


porfavor

Answer 1

Resposta:

Letra a)

Explicação passo-a-passo:

3,111.. = x → 10x = 31,111..

10x - x = 31,111.. - 3,111.. = 28

[x = 28/9]

[2,3 = 23/10]

0,222... = y → 10y = 2,222..

10y - y =2,222.. - 0,222.. = 2

[y = 2/9]

28/9 + 23/10 - 2/9 = 26/9 + 23/10 = 467/90