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saritas
@saritas
October 2020
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(0,777...+1/2): 2/3
Resolva pf pfpfpf
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3478elc
Verified answer
Primeiro resolvemos a dízima periódica
x=0,777... x (10)
10x=7,777...
x= 0,777...
9x= 7
x= 7/9
(7/9 + 1/2)÷2/3=
(
14 + 9
) ÷ 2/3=
18
23 ÷2/3=
69 ÷2
= 69 ÷2 = 34,5
3
1 votes
Thanks 5
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Lista de comentários
Verified answer
Primeiro resolvemos a dízima periódicax=0,777... x (10)
10x=7,777...
x= 0,777...
9x= 7
x= 7/9
(7/9 + 1/2)÷2/3=
(14 + 9) ÷ 2/3=
18
23 ÷2/3=
69 ÷2 = 69 ÷2 = 34,5
3