(6 1/8 - 1,75) : (9 - 2,2 * (5 6/11 - 3,5)) * 1 2/7 = 1,25 = 1 1/4
1) 6 1/8 - 1,75 = 6 1/8 - 1 75/100 = 6 25/200 - 1 150/200 = 5 225/200 - 1 150/200 = 4 75/200 = 4 15/40 = 4 3/8
2) 5 6/11 - 3,5 = 5 6/11 - 3 5/10 = 5 60/110 - 3 55/110 = 2 5/110 = 2 1/22
3) 2,2 * 2 1/22 = 2 2/10 * 2 1/22 = 22/10 * 45/22 = 1/2 * 9/1 = 9/2 = 4,5 = 4 1/2
4) 9 - 4,5 = 4,5 = 4 1/2
5) 4 3/8 : 4 1/2 = 35/8 : 9/2 = 35/8 * 2/9 = 35/4 * 1/9 = 35/36
6) 35/36 * 1 2/7 = 35/36 * 9/7 = 5/4 = 1,25 = 1 1/4
(3 5/6 - 1 2/15) * 5/9 + ((1/20 + 0,24) * 8 1/3 - 1 1/6) * 2 = 4
1) 3 5/6 - 1 2/15 = 3 25/30 - 1 4/30 = 2 21/30 = 2 7/10 = 2,7
2) 1/20 + 0,24 = 1/20 + 24/100 = 5/100 + 24/100 = 29/100 = 0,29
3) 29/100 * 8 1/3 = 29/100 * 25/3 = 29/4 * 1/3 = 29/12 = 2 5/12
4) 2 5/12 - 1 1/6 = 2 5/12 - 1 2/12 = 1 3/12 = 1 1/4
5) 2 7/10 * 5/9 = 27/10 * 5/9 = 3/2 = 1 1/2 = 1,5
6) 1 1/4 * 2 = 5/4 * 2 = 5/2 = 2,5 = 2 1/2
7) 1 1/2 + 2 1/2 = 3 2/2 = 4