14-13,2:(3 11/21- 2 4/15

Question

14-13,2:(3 11/21- 2 4/15

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Answer 1

14 - 13,2 : (3 11/21 - 2 4/15) = 3,5

1) 3 11/21 - 2 4/15 = 3 55/105 - 2 28/105 = 1 27/105 = 1 9/35

2) 13,2 : 1 9/35 = 132/10 : 44/35 = 132/10 * 35/44 = 3/10 * 35 = 105/10 = 10,5

3) 14 - 10,5 = 3,5

Answer 2

1)74-34=40
2)0,8:40=0,02