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Calculați:a)1/12+7/12+7/12= b)3/20+9/20+3/20= c)4/15+1/15+7/15; d)5/18+11/18+5/18; e)7/24+7/24+13/24; f)8/35+6/35+11/35.​

Răspuns :

Răspuns:

a) 1/12 + 7/12 + 7/12 = 15/12 = 5/4

b) 3/20 + 9/20 + 3/20 = 15/20 = 3/4

c) 4/15 + 1/15 + 7/15 = 12/15 = 4/5

d) 5/18 + 11/18 + 5/18 = 21/18 = 7/6

e) 7/24 + 7/24 + 13/24 = 27/24 = 9/8

f) 8/35 + 6/35 + 11/35 = 25/35 = 5/7

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