Пошаговое объяснение:

1)

(-27 : 6) - (-12,41) = -4,5 + 12,41 = 7,91

2)

2 1/6 + (1 1/27 : (-7 7/9) = 2 1/6 + (28/27 : (-70/9)) =

2 1/6 + (28/27 * (-9/70)) = 2 1/6 + (2/3 * (-1/5)) =

2 1/6 + (-2/15) = 2 1/6 - 2/15 = 2 5/30 - 4/30 =

2 1/30