2целых11\15+х=5целых2\15 х-2целых5\16=4целых13\16

1) 2 11/15 + х = 5 2/15;

х = 5 2/15 - 2 11/15;

х = 5 - 2 + 2/15 - 11/15;

х = 3 + (2 - 11)/15;

х = 3 - 9/15;

х = 3 - (3 * 3)/(3 * 5);

х = 3 - 3/5;

х = 2 + 1 - 3/5;

х = 2 + 5/5 - 3/5;

х = 2 + (5 - 3)/5;

х = 2 + 2/5;

х = 2 2/5.

Ответ: х = 2 2/5.

2) х - 2 5/16 = 4 13/16;

х = 4 13/16 + 2 5/16;

х = 4 + 2 + 13/16 + 5/16;

х = 6 + (13 + 5)/16;

х = 6 + 18/16;

х = 6 + 1 + (18 - 1 * 16)/16;

х = 6 + 1 + (18 - 16)/16;

х = 6 + 1 + 2/16;

х = 7 + 2/16;

х = 7 + 2/(2 * 8);

х = 7 + 1/8;

х = 7 1/8.

Ответ: х = 7 1/8.