Question

Se x=0,666... E y=0,1777..., o valor de x+y ??

Answer 1

Boa tarde

x = 0.666...
10x = 6.666...
9x = 6
x = 6/9 = 2/3

y = 0.1777...
100y = 17.777...
10y = 1.777...
90y = 16
y = 16/90 = 8/45 

x + y = 2/3 + 8/45 
x + y = 30/45 + 8/45
x + y = 38/45 

Answer 2

Resposta:x+y= 38/45

Explicação passo-a-passo:

x = 0.666...

10x = 6.666...

9x = 6

x = 6/9 = 2/3

y = 0.1777...

100y = 17.777...

10y = 1.777...

90y = 16

y = 16/90 = 8/45

x + y = 2/3 + 8/45

x + y = 30/45 + 8/45

x + y = 38/45