Question

calcular:
2-1\3 -1\5

Answer 1

2-1\3 = 3/1=1    2-1=1

1-1/5 - 1\5=0.20 

1-0.20 = 0,80

?!
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Answer 2

2/15 , pois:
2-1/3=1/3; 1/3 - 1/5 = 5-3/15 ( MMC = 15 ) ; 2/15