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4 2/5 = 22/5
11/4 +22/5 = 55/20 +88/20 = 143/20 = 7 3/20
2) 2/5 +2/1 = 2/5 + 10/5 = 12/5 = 2 2/5
3) 2/4 + 2/5 = 10/20 + 8/20 = 18/20 = 9/10
4) 2/3 + 2/5 = 10/15 + 6/15 = 16/15 = 1 1/15
5) 4 2/5 = 22/5
1 2/3 = 5/3
22/5 + 5/3 = 66/15 + 25/15 = 91/15 = 6 1/15
Alafu kalok salah