a) 2/3 razy 5 1/4 + 2 1/3 : 3 1/9 - 1 4/7 razy 2 6/11 b) 4 1/6 : 5 5/9 - 1 1/8 razy 2/3 + 5/6 : 3 1/3 c) 7 1/5 : 5 1/7 - 3 3/4 : 7 1/2 - 3/5 razy 1 1/2 d) 1 3/7- 1 1/3 : 8 1/3 - 1 4/5 razy 1/7 e) 1 - 5/11 razy 3 2/3 razy 3/10

a) (...) = 1/4 b) (...) = 1/2 c) (...) = - 5/8 d) (...) = 1 e) (...) = 1/2

a) 2/3 * 5 1/4 + 2 1/3 : 3 1/9 - 1 4/7 * 2 6/11 =2/3 * 21/4 + 7/3 : 28/9 - 11/7 * 28/11 = 7/2 + 7/3 * 9/28 - 4 = 7/2 + 3/4 - 4 = 14/4 + 3/4 - 16/4 = 1/4 b) 4 1/6 : 5 5/9 - 1 1/8 * 2/3 + 5/6 : 3 1/3 = 25/6 : 50/9 - 9/8 * 2/3 + 5/6 : 10/3 = 25/6 * 9/50 - 3/4 + 5/6 * 3/10 = 1/2 * 3/2 - 3/4 + 1/2 * 1/2 = 3/4 - 3/4 + 1/4 = 1/4 c) 7 1/5 : 5 1/7 - 3 3/4 : 7 1/2 - 3/5 * 1 1/2 = 36/5 : 36/5 - 15/4 : 15/2 - 3/5 * 3/2 = 36/5 * 5/36 - 15/4 * 2/15 - 9/10 = 1 - 1/2 - 9/10 = 10/10 - 5/10 - 9/10 = -4/10 = - 2/5 d) 1 3/7- 1 1/3 : 8 1/3 - 1 4/5 * 1/7 = 10/7 - 4/3 : 25/3 - 9/5 * 1/7 = 10/7 - 4/3 * 3/25 - 9/35 = 1 3/7 - 4/25 - 9/35 = 1 150/350 - 56/350 - 90/350 = 1 4/350 = 1 2/175 e) 1 - 5/11 * 3 2/3 * 3/10 = 1 - 5/11 * 11/3 * 3/10 = 1 - 1/1 * 1/1 * 1/2 = 1 - 1/2 = 1/2