Me ajudem a calcular, preciso do cálculo, por favor. Não estou conseguindo chegar ao cálculo.
¾ - ½ =
3/6 + 3/2 =
3/5 + ¾ + 3/10 =
8/5 - ¼ + 3/10 =

4 + ½ + 2/3 =
1/3 + 2 1/5 =
0/10 + 3/20 + 11/30 =
2 – 1/3 – 1/5 =
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