Question

Seja x=2,333... e y=0,1212..., então x+y=

Answer 1

Resposta:

x=2,333

y=0,1212

×+y=2,4542

Explicação passo-a-passo:

0,1212

+2,333

2,4542

Answer 2

Resposta:

2,4545...

Explicação passo-a-passo:

x=2,333...

10x=23,333...

10x-x=23,333... - 2,333...

9x=21

x=21/9

y=0,1212...

100y=12,1212...

100y-y=12,1212... - 0,1212...

99y=12

y=12/99

x + y = 21/9 + 12/99

x + y = 7/3 + 4/33

x + y = 77/33 + 4/33 = 81/33 = 27/11

x + y = 27/11 = 2,4545...

(c.q.d)

8-)