( 3 11/27 - 2 17/18) : 1 23/27 + 3 3/5 : 3= 1 1/2 * 2 2/11 + 2 3/4 * 2 2/11 - 2/11 * 3 5/6=

             1              2              4        3

(3 11/27 - 2 17/18) : 1 23/27 + 3 3/5 : 3 = 1 9/20.

1) 92/27 - 53/18 = 184/54 - 159/54 = 25/54;

2) 25/54 : 50/27 = 25/54 * 27/50 = 1/4;

3) 3 3/5 : 3 = 18/5  * 1/3 = 18/15 = 6/5;

4) 1/4 + 6/5 = 5/20 + 24/20 = 29/20 =1 9/20.

        1            4          2           5          3

1 1/2 * 2 2/11 + 2 3/4 * 2 2/11 - 2/11 * 3 5/6 = 8 19/33.

1) 1 1/2 * 2 2/11 = 3/2 * 24/11 = 36/11;

2) 2 3/4 * 2 2/11 = 11/4 * 24/11 = 6;

3) 2/11 * 3 5/6 = 2/11 * 23/6 = 23/33;

4) 36/11 + 6 = 36/11 + 66/11 = 102/11;

5) 102/11 - 23/33 = 306/33 - 23/33 = 283/33 = 8 19/33.