Sendo a = 1,555... e b = 0.313131..., o valor de a +b é: a) 185/99 b) 185/9 c) 85/99 d) 85/9.... Pergunta de ideia deAndreyRadames78

December 2022 1 12 Report

Sendo a = 1,555... e b = 0.313131..., o valor de a +b é: a) 185/99 b) 185/9 c) 85/99 d) 85/9

Resposta:

Explicação passo a passo:

a=1,555...

10a=15,555...

10a-a=15,555...-1,555...

9a=14

a=14/9

b=0,313131...

100b=31,313131...

100b-b=31,313131...-0,313131...

99b=31

b=31/99

a+b=

14/9+31/99=

154/99+31/99=

185/99

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