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a) b)
1.242424... (periodico simple) 2.15 (decimal finito)
= 1 + 0.242424... (periodo 24) = 215/100
= 1 + 24/99 = 43/20 (simplificado por 5)
= (1x99 + 24)/99
= 123/99 (no cabe simplificación)
c)
0.8444... (periodico compuesto)
= (84 - 8)/90
= 76/90
= 38/45 (simplificado or 2)