Resposta:
a) 3,212121... = 3 + 21\99 = 3.99+21\99 =
318\99 = 106\33
b) 1,888... = 1 + 8\9 = 1.9+8\9 = 17\9
c) 0,262626... = 26\99
d) 12,333... = 12 + 3\9 = 12.9+3\9 = 111\9 = 37\3
e - ) 5,01209209... = 5 + 01209 - 01\99900 = 5 + 1209-1\99900 =
5 + 1208\99900 = 5.99900+1208\99900 =
500708\99900 = 250354\49950 = 125177\24975
Explicação passo-a-passo:
