а) 1/4 - (1 - 11/12)1/4 - (12/12 - 11/12)1/4 - 1/12= 3/12 - 1/12= 2/12= 1/6
б) 2 - (13/33 - 5/22)2 - (22/66 - 15/66)2 - 7/66= 2 - 7/66= 2 * 66/66 - 7/66= 132/66 - 7/66= 125/66
а) 1/4 - (1 - 11/12)
1/4 - (12/12 - 11/12)
1/4 - 1/12
= 3/12 - 1/12
= 2/12
= 1/6
б) 2 - (13/33 - 5/22)
2 - (22/66 - 15/66)
2 - 7/66
= 2 - 7/66
= 2 * 66/66 - 7/66
= 132/66 - 7/66
= 125/66