15/22-(4-1 5/6) : х= 1 5/33
15/22- 1 5/33= (3 6/6 -1 5/6) : х
45/66 - 1 10/66= 2 1/6 : х
45/66 - 76/66 = 2 1/6 : х
- 31/66 = 2 1/6 : х
х = 13/6 : (- 31/66)
х = 13/6 * (- 66/31)
х = 13*11/31
х = 143/31
х = 4 19/31
(-3 9/25) * 1 17/63 + 1 19/45 * 1 3/32=
(-84/25) * 80/63 + 64/45 * 35/32=
4*16/5*3 + 2*7/9=
64/15 + 14/9 =
4 4/15 + 1 5/9 =
4 12/45 + 1 25/45 =
5 37/45