(-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 = -5/2 -11/6 = -15/6 -11/6 = -26/6 = -13/3
2) -13/3 : 1 4/9 = -13/3 : 13/9 = -13/3 * 9/13 = -3
3) 3 5/9 * (- 2 1/4) = 32/9 * (-9/4) = -8
4) -3 - (-8) = -3 + 8 = 5
(3/4 - 1 7/8) : 3/4 + 3 1/9 * 3/7 =
1) 3/4 - 1 7/8 = 3/4 - 15/8 = 6/8 - 15/8 = - 9/8
2) -9/8 : 3/4 = - 9/8 * 4/3 = -3/2
3) 3 1/9 * 3/7 = 28/9 * 3/7 = 4/3
4) -3/2 + 4/3 = -9/6 + 8/6 = -1/6