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
1. 6 5/7 - 4/7
2. 3 6/12 - 1 4/12
3. 80/12 + 56/12 - 42/12
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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
36/12-14/12=22/14=12/7=1*5/7
80/12+56/12=24/12=2