-2,5 = -2 3/2 = -5/21 5/6 = 6/6 + 5/6 = 11/6
(-5/2) - (11/6) = (-15/6) - (11/6) = -26/6 = -13/3 ≈ -4,33
1 4/9 = 9/9 + 4/9 = 13/93 5/9 = 27/9 + 5/9 = 32/9-2 1/4 = -9/4 - 1/4 = -10/4 = -5/2
(13/9) - (32/9 * -5/2) = 13/9 + 80/9 = 93/9 = 31/3 = 10,33
Ответ: -4,33 - 10,33 = -14,66
-2,5 = -2 3/2 = -5/2
1 5/6 = 6/6 + 5/6 = 11/6
(-5/2) - (11/6) = (-15/6) - (11/6) = -26/6 = -13/3 ≈ -4,33
Решим второе выражение: 1 4/9 - 3 5/9 * (-2 1/4)1 4/9 = 9/9 + 4/9 = 13/9
3 5/9 = 27/9 + 5/9 = 32/9
-2 1/4 = -9/4 - 1/4 = -10/4 = -5/2
(13/9) - (32/9 * -5/2) = 13/9 + 80/9 = 93/9 = 31/3 = 10,33
Ответ: -4,33 - 10,33 = -14,66