Question

4x-5 1/3y+61/8:z-17 11/18, если x=5/9; y=3/16; z=7/20

Answer 1

   1        4        2          5        3          6
4 * 5/9 - 16/3 * 3/16 + 49/8 : 7/20 - 17 11/18 = 1 1/6
1) 4 * 5/9 = 20/9
2) 16/3 * 3/16 = 1
3) 49/8 : 7/20 = (49 * 20) / 8 * 7) = 35/2
4) 20/9 - 1 = 20/9 - 9/9 = 11/9
5) 11/9 + 35/2 = 22/18 +  315/18 = 337/18 = 18 14/18
6) 18 14/18 - 17 11/18 = 1 3/18 = 1 1/6