3. Հաշվել արտահայտության արժեքը (Вычислить значение выражения).

1. 1 2/3 - 1/2 - 2 1/6 = 5/3 - 1/2 - 13/6 = 10/6 - 3/6 - 13/6 = -6/6 = -1 2. 2 1/3 + 3 1/2 - 3 1/6 = 7/3 + 7/2 - 19/6 = 14/6 + 21/6 - 19/6 = 16/6 = 8/3 = 2 2/3 3. 3 1/3 - 1 1/2 - 1 1/6 = 10/3 - 3/2 - 7/6 = 20/6 - 9/6 - 7/6 = 4/6 = 2/3 4. 2 1/4 - 1 1/3 - 2 1/12 = 9/4 - 4/3 - 25/12 = 27/12 - 16/12 - 25/12 = -14/12 = -7/6 = -1 1/6 5. 1 1/4 + 3 1/3 - 1 1/12 = 5/4 + 10/3 - 13/12 = 15/12 + 40/12 - 13/12 = 42/12 = 7/2 = 3 1/2 6. 2 2/3 - 5 1/2 - 1 1/6 = 8/3 - 11/2 - 7/6 = 16/6 - 33/6 - 7/6 = -24/6 = -4 7. 14 5/13 + 8 3/7 - 10 5/13 = (14-10) + (5/13-5/13) + 8 3/7 = 4 + 0 + 8 3/7 = 12 3/7 8. 10 5/12 + 6 7/13 - 9 5/12 = (10-9) + (5/12-5/12) + 6 7/13 = 1 + 0 + 6 7/13 = 7 7/13 9. 8 2/7 + 4 1/8 - 7 2/7 = (8-7) + (2/7-2/7) + 4 1/8 = 1 + 0 + 4 1/8 = 5 1/8 10. 7 3/5 + 4 2/7 - 5 3/5 = (7-5) + (3/5-3/5) + 4 2/7 = 2 + 0 + 4 2/7 = 6 2/7