1 1/3×2/7×1,5×22/33
________________=
8/49×5/14×3 2/3

1) 1 1/3 * 2/7 * 1,5 * 22/33 = 4/3 * 2/7 * 3/2 * 22/33 = 4/7 * 22/33 = 4/7 * 2/3 = = 8/21 2) 8/49 * 5/14 * 3 2/3 = 8/49 * 5/14 * 11/3 3) 8/21  : ( 8/49 * 5/14 * 11/3 ) = ( 49*14 ) / ( 35 * 11 ) = ( 49*2 ) / 55 = 98/55 == 1 43/55