Question

Дам 10 баллов! Решите примеры с дробями плиз ! )

1. 6 5/7 - 4/7
2. 3 6/12 - 1 4/12
3. 80/12 + 56/12 - 42/12

Answer 1

1. 6 5/7 - 4/7=6  1/7
2. 3 6/12 - 1 4/12=2  2/12=2  1/6
3. 80/12 + 56/12 - 42/12=94/12=7 10/12=7  5/6

Answer 2

65/7-4/7=61/7
36/12-14/12=22/14=12/7=1*5/7
80/12+56/12=24/12=2