а) 3 + 8 5/12 = 3 + 8 + 5/12 = 11 5/12б) 10 6/7 - 3 = 10 + 6/7 - 3 = 10 6/7 - 21/7 = 10 6/7 - 3 = 7 6/7в) 4 2/13 + 5 7/13 = 4 + 5 + 2/13 + 7/13 = 9 + 9/13 = 9 9/13г) 8 7/12 - 4 2/12 = 8 - 4 + 7/12 - 2/12 = 4 + 5/12 = 4 5/12д) 4 8/11 + 5 7/11 = 4 + 5 + 8/11 + 7/11 = 9 + 15/11 = 9 15/11 = 10 4/11е) 7 5/9 - 2 8/9 = 7 - 2 + 5/9 - 8/9 = 5 - 3/9 = 4 2/3ж) 7 - 3/8 = 7 - 3/8 = 7 - 0.375 = 6 5/8з) 10 - 3 7/15 = 10 - 3 - 7/15 = 10 - 3 - 0.4667 = 7 14/15
а) 3 + 8 5/12 = 3 + 8 + 5/12 = 11 5/12
б) 10 6/7 - 3 = 10 + 6/7 - 3 = 10 6/7 - 21/7 = 10 6/7 - 3 = 7 6/7
в) 4 2/13 + 5 7/13 = 4 + 5 + 2/13 + 7/13 = 9 + 9/13 = 9 9/13
г) 8 7/12 - 4 2/12 = 8 - 4 + 7/12 - 2/12 = 4 + 5/12 = 4 5/12
д) 4 8/11 + 5 7/11 = 4 + 5 + 8/11 + 7/11 = 9 + 15/11 = 9 15/11 = 10 4/11
е) 7 5/9 - 2 8/9 = 7 - 2 + 5/9 - 8/9 = 5 - 3/9 = 4 2/3
ж) 7 - 3/8 = 7 - 3/8 = 7 - 0.375 = 6 5/8
з) 10 - 3 7/15 = 10 - 3 - 7/15 = 10 - 3 - 0.4667 = 7 14/15