Răspuns:
Explicație pas cu pas:
a)
2/5 + 1/10 + 1/2 = 4/10 + 1/10 + 5/10 = 10/10 = 1
b)
1/6 + 1/8 + 5/24 = 4/24 + 3/24 + 5/24 = 12/24 = 1/2
c)
1/2 + 5/4 + 7/12 = 6/12 + 15/12 + 7/12 = 28/12 = 7/3
e)
3/20 + 31/20 + 3/10 = 34/20 + 3/10 = 17/10 + 3/10 = 20/10 = 2
f)
2/7 + 4/3 + 5/2 = 12/42 + 56/42 + 105/42 = 173/42
g)
4/9 + 6/5 + 2/45 = 20/45 + 54/45 + 2/45 = 76/45
i)
9/8 + 11/6 + 7/24 = 27/24 + 44/24 + 7/24 = 78/24 = 39/12
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te las sa-l faci singur pe j)
