(3/5 - 19/25) * 4 11/16 - (1:1,5) * (-3 3/8) = 1,5
1) 3/5 - 19/25 = 15/25 - 19/25 = -4/25
2) -4/25 * 4 11/16 = -4/25 * 75/16 = -1/1 * 3/4 = -3/4
3) 1 : 1,5 = 1 : 1 5/10 = 1 * 10/15 = 10/15 = 2/3
4) 2/3 * (-3 3/8) = 2/3 * (-27/8) = 1/1 * (-9/4) = -9/4
5) -3/4 - (-9/4) = -3/4 + 9/4 = 6/4 = 1,5