(3,2 + 2 2/7 * 0,7 (3,8 - 2 1/6) : 1,4)
------------------------ - ----------------------- : 4 3/8 = 4
( 0,6 - 1/3 5 8/15 - 3 1/5 )
1) 3,8 - 2 1/6 = 3 8/10 - 2 1/6 = 3 24/30 - 2 5/30 = 1 19/30
2) 2 2/7 * 0,7 = 16/7 * 7/10 = 16/10 = 8/5 = 1,6
3) 1 19/30 : 1,4 = 49/30 : 14/10 = 49/30 * 10/14 = 7/3 * 1/2 = 7/6 = 1 1/6
4) 3,2 + 1,6 = 4,8
5) 0,6 - 1/3 = 6/10 - 1/3 = 3/5 - 1/3 = 9/15 - 5/15 = 4/15
6) 5 8/15 - 3 1/5 = 5 8/15 - 3 3/15 = 2 5/15 = 2 1/3
7) 4,8 : 4/15 = 48/10 : 4/15 = 48/10 * 15/4 = 12/2 * 3/1 =36/2 = 18
8) 1 1/6 : 2 1/3 = 7/6 : 7/3 = 7/6 * 3/7 = 1/2 * 1/1 = 1/2
9) 18 - 1/2 = 17 2/2 - 1/2 = 17 1/2
10) 17 1/2 : 4 3/8 = 35/2 : 35/8 = 35/2 * 8/35 = 8/2 = 4