см фото
надеюсь
Пошаговое объяснение:
1) = -78 - 80 = - 158
2) = 15
3) = -2,965
4) = -13,8 - 77,7 = -91,5
5) = -4/9 - 3/5 = -20/45 - 27/45 = -47/45 = -1 2/45
6) = 5 3/4 - 5 5/9 = 5 23/36 - 5 20/36 = 3/36 = 1/12
7) = (-16/60 + 25/60) + (-0,3) = 9/60 - 3/10 = 9/60 - 18/60 = -9/60 = -3/20
8) =(7 14/33 - 8 1/11) - 6/10 = (7 14/33 - 8 3/33) - 6/10 = (7 14/33 - 7 36/33) - 6/10 = -22/33 - 6/10 = -2/3 - 6/10 = -20/30 - 18/30 = -38/30 = -1 8/30 = -1 4/15
