Номер 1110
1) 1 5/6 + (–2 4/9) + (–5/8) + 2 7/12 = 1 60/72 + (–2 32/72) + (–45/72) + 2 42/72 = 1 60/72 + 2 42/72 + (–2 32/72) + (–45/72) = 3 102/72 + (–2 77/72) = 1 25/72
2) –7 4/9 + 6 3/4 + (–2 5/12) = –7 16/36 + (–2 15/36) + 6 27/36 = –9 31/36 + 6 27/36 = –3 4/36 = –3 1/9
3) –2 1/5 + 9 21/25 + (–5 7/10) = –2 10/50 + (–5 35/50) + 9 42/50 = –7 45/50 + 9 42/50 = –7 45/50 + 8 92/50 = 1 47/50
4) –42,08 + (–62/5) + (–73/4) = –(42,08 + 6,4 + 7,75) = –56,23
5) –5,1 + (–3 3/10) + 5 1/3 + (–0,7) = –5,1 + (–3,3) + (–0,7) + 5 1/3 = –9,1 + 5 1/3 = –(9 1/10 – 5 1/3) = –(8 11/10 – 5 1/3) = –(8 33/30 – 5 10/30) = –3 23/30
6) –3 2/5 + (–8,75) + 15 3/10 + (–6 8/15) = –3 2/5 + (–8 3/4) + (–6 8/15) + 15 3/10 = –17 101/60 + 15 3/10 = –18 41/60 + 15 18/60 = –3 23/60