Номер 1036
Обчисли суму:
1) –1 3/5 + (–2 5/6) = –(1 18/30 + 25/30) = –3 43/30 = –4 13/30
2) –5 7/15 + (–8 3/10) = –(5 14/30 + 8 9/30) = –13 23/30
3) –4 9/14 + (–2 4/21) = –(4 27/42 + 2 8/42) = –6 35/42 = –6 5/6
4) –0,85 + (–4 1/2) = –0,85 + (–4,5) = –5,35
5) –4 3/10 + (–1,2) = –4,3 + (–1,2) = –5,5
6) –5,15 + (– 2 1/4) = –5,15 + (–2,25) = –7,4