6 2/25 + 7 23/25 -4 1/40 б) 20 1/19-4 12/19 -5 17/19 в) (6 5/24+7 19/24)-6 19/23-5 9/23

Question

6 2/25 + 7 23/25 -4 1/40
б) 20 1/19-4 12/19 -5 17/19
в) (6 5/24+7 19/24)-6 19/23-5 9/23

Answer 1

А) 13 25/25-4 1/40= 14-4 1/40= 13 40/40-4 1/40=11 39/40
б) 20 1/19-(4 12/19+5 17/19)=20 1/19-9 29/19= 20 1/19-10 10/19=19 20/19-10 10/19=9 10/19
в) 13 24/24-6 19/23 - 5 9/23= 14-(6 19/23+5 9/23)=14-11 24/23=14-12 1/23=13 23/23-12 1/23=1 22/23