а) 11 2/7 + 4 3/7 - 6 4/7 = (11 + 4 - 6) + (2/7 + 3/7 - 4/7) = 9 + 1/7 = 9 1/7б) 26 7/19 - 13 4/19 + 5 2/19 = (26 - 13 + 5) + (7/19 - 4/19 + 2/19) = 18 + 5/19 = 18 5/19в) 44 2/9 + 8 5/9 - 7/9 = (44 + 8) + (2/9 + 5/9 - 7/9) = 52 + 0 = 52г) 5 7/10 + 3 9/10 + 1 3/10 = (5 + 3 + 1) + (7/10 + 9/10 + 3/10) = 9 + 19/10 = 10 9/10д) 3 17/100 - 2 13/100 - 1 = (3 - 2 - 1) + (17/100 - 13/100) = 0 + 4/100 = 0 1/25е) 8 - 4 31/100 - 2 57/100 = 8 + (-4 31/100) + (-2 57/100) = 8 + (-5) - 3 = 8 - 5 - 3 = 0
а) 11 2/7 + 4 3/7 - 6 4/7 = (11 + 4 - 6) + (2/7 + 3/7 - 4/7) = 9 + 1/7 = 9 1/7
б) 26 7/19 - 13 4/19 + 5 2/19 = (26 - 13 + 5) + (7/19 - 4/19 + 2/19) = 18 + 5/19 = 18 5/19
в) 44 2/9 + 8 5/9 - 7/9 = (44 + 8) + (2/9 + 5/9 - 7/9) = 52 + 0 = 52
г) 5 7/10 + 3 9/10 + 1 3/10 = (5 + 3 + 1) + (7/10 + 9/10 + 3/10) = 9 + 19/10 = 10 9/10
д) 3 17/100 - 2 13/100 - 1 = (3 - 2 - 1) + (17/100 - 13/100) = 0 + 4/100 = 0 1/25
е) 8 - 4 31/100 - 2 57/100 = 8 + (-4 31/100) + (-2 57/100) = 8 + (-5) - 3 = 8 - 5 - 3 = 0