1) -3 1/3 * (-2 3/4 * 2/11) =
-2 3/4 * 2/11 = -11/4 * 2/11 = -1/2
-3 1/3 * (-1/2) = -10/3 * (-1/2) = 5/3 = 1 2/3
2) 1/3 : (-2/5) : (-5/9) =
1/3 : (-2/5) = 1/3 * 5/2 = -5/6
-5/6 : (-5/9) = -5/6 * (-9/5) = 3/2 = 1,5
3) 3,6 + 2х = 5х + 1,2
2х - 5х = 1,2 - 3,6
-3х = -2,3
х = 2/9