а) 7 5\8 + 2 2\3 - 4 3\16 = 7 + 5/8 + 2 + 2/3 - 4 - 3/16= 7 + 2 + 5/8 + 2/3 - 4 - 3/16= 9 + 5/8 + 2/3 - 4 - 3/16= 9 + 15/24 + 16/24 - 96/24 - 3/48= 9 + 31/24 + 16/24 - 96/24 - 3/48= 9 - 49/24 - 3/48= 8 25/48
б) 16 23\25 - 4 7\10 - 5 1\5 = 16 + 23/25 - 4 - 7/10 - 5 - 1/5= 16 - 4 - 5 + 23/25 - 7/10 - 1/5= 7 + 23/25 - 7/10 - 1/5= 7 + 23/25 - 35/50 - 10/50= 7 + 23/25 - 35/50 - 10/50= 7 + 46/50 - 35/50 - 10/50= 7 + 11/50
в) 18 - (3 3\4 + 2 1\6) = 18 - 3 - 3/4 - 2 - 1/6= 18 - 5 - 3/4 - 1/6= 13 - 12/16 - 2/12= 13 - 3/4 - 1/6= 13 - 9/12 - 2/12= 13 - 11/12= 12 1/12
а) 7 5\8 + 2 2\3 - 4 3\16 = 7 + 5/8 + 2 + 2/3 - 4 - 3/16
= 7 + 2 + 5/8 + 2/3 - 4 - 3/16
= 9 + 5/8 + 2/3 - 4 - 3/16
= 9 + 15/24 + 16/24 - 96/24 - 3/48
= 9 + 31/24 + 16/24 - 96/24 - 3/48
= 9 - 49/24 - 3/48
= 8 25/48
б) 16 23\25 - 4 7\10 - 5 1\5 = 16 + 23/25 - 4 - 7/10 - 5 - 1/5
= 16 - 4 - 5 + 23/25 - 7/10 - 1/5
= 7 + 23/25 - 7/10 - 1/5
= 7 + 23/25 - 35/50 - 10/50
= 7 + 23/25 - 35/50 - 10/50
= 7 + 46/50 - 35/50 - 10/50
= 7 + 11/50
в) 18 - (3 3\4 + 2 1\6) = 18 - 3 - 3/4 - 2 - 1/6
= 18 - 5 - 3/4 - 1/6
= 13 - 12/16 - 2/12
= 13 - 3/4 - 1/6
= 13 - 9/12 - 2/12
= 13 - 11/12
= 12 1/12