|2,5| = 2,5
|-4| = 4
|2 1/3| = 2 1/3 = 7/3
|-3/4| = 3/4
2,5 * 4 - (7/3) : (3/4) = 10 - (7/3) * (4/3) = 10 - 28/9 = 10 - 3 1/9 = 6 8/9
Ответ: 6 8/9