(7/18 + 5/16 - 11/24) * (0,17 * 52 - 3,883 : 0,55 + 0,62) + 1/3 : 0,8 = 1,
1) 7/18 + 5/16 - 11/24 = 56/144 + 45/144 - 66/144 = 167/144 = 35/144,
2) 0,17 * 52 = 8,84,
3) 3,883 : 0,55 = 7,06,
4) 8,84 - 7,06 + 0,62 = 2,4,
5) 35/144 * 2,4 = 35/144 * 10/24 = 7/12,
6) 1/3 : 0,8 = 1/3 : 8/10 = 1/3 * 10/8 = 5/12,
7) 7/12 + 5/12 = 12/12 = 1