(- 2,5 - 1 5/6) : 1 4/9 - 3 5/9 * (- 2 1/4) = 5
1) - 2,5 - 1 5/6 = - 2 1/2 - 1 5/6 = - 2 3/6 - 1 5/6 = - 3 8/6 = - 4 2/6 = - 4 1/3
2) - 4 1/3 : 1 4/9 = - 13/3 : 13/9 = - 13/3 * 9/13 = - 9/3 = - 3
3) 3 5/9 * (- 2 1/4) = 32/9 * (- 9/4) = - 32/4 = - 8
4) - 3 - (- 8) = - 3 + 8 = 8 - 3 = 5