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Resolva. a) 3/2 + 1/4 + 1/5 = b) 2/4 + 1/2 + 2/5 = c) 7/10 - 12/24= d) 3/4 + 12/15 - 5/10=

Resposta :

Resposta:

a) 5/11

b) 5/11

c) -5/-14

d) 10/9

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