18) Efetue as adições e simplifique o resultado quando possível: a) 2 4 + 2 1 4 b) 3 1 9 + 4 9 c) 3 2 + 5 3 7 d) 2 7 + 3 1 4 + 7 11 e) 2 1 7 + 1 +...

Vamos resolver as adições: a) 2 + 4 + 2 + 1/4 = 6 + 2 + 1/4 = 6 2 1/4 b) 3 1/9 + 4/9 = 3 5/9 c) 3 2/5 + 5 3/7 = 8 5/7 d) 2 7/3 + 3 1/4 + 7 = 2 7/3 + 3 1/4 + 7 = 6 7/12 + 7 = 6 7 1/12 e) 2 1/7 + 1 + 6/9 = 2 1/7 + 1 + 2/3 = 3 1/7 + 2/3 = 3 1 14/21 = 4 14/21 f) 3 6/11 + 2 5/6 + 1 1/2 + 13 = 3 6/11 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 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11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5 11/22 + 2 5/6 + 1 1/2 + 13 = 5