4 целых 1/2+2 целых 1/33 целых 1/14-2 целых2/73 целых 2/10 + (5 целых 1/6-3 целых1/3) х+2,25=6 целых5/9-2 целых1/2

№1

4 1/2 + 2 1/3 = 9/2 + 7/3 = 27/6 + 14/6 = 41/6 = 36 5/6.

№2

3 1/14 - 2 2/7 = 43/14 - 32/14 = 11/14.

№3

3 2/10 + (5 1/6 - 3 1/3) х + 2,25 = 6 5/9 - 2 1/2;

32/10 + (31/6 - 10/3) х + 225/100 = 59/9 - 5/4;

32/10 + (31/6 - 20/6) х + 225/100 = 236/36 - 45/36;

32/10 + 11/6 х + 225/100 = 191/36;

11/6 х = 191/36 - 32/10 - 225/100;

11/6 х = 1910/360 - 1152/360 - 225/100;

11/6 х = 758/360 - 225/100;

11/6 х = 379/180 - 225/100;

11/6 х = 379/180 - 9/4;

11/6 х = 379/180 - 405/180;

11/6 х = - 26/180;

х = - 26/180 : 11/6;

х = - 26/180 * 6/11;

х = - 13/165.

Ответ: х = - 13/165.