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  • Usuário do Brainly
2014-08-26T10:20:28-03:00
9/2 + 7/4 +2/3 = 54/12 + 21/12 + 8/12 = 83/12

2/5 + 1/10 + 1/2 = 4/10 + 1/10 + 5/10 = 10/10 = 1

5/6 - 1/4 + 2/3 = 10/12 - 3/12 +8/12 = 15/12

3/7 + 2/5 + 4/7 + 3/5 = 5/5 + 7/7 = 1 + 1 = 2
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