\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
(с-1)*(3-с)=0
3с-с²-3-с=0
2с-с²=3
Вот решение: <span>(11,28 + 3,4 : 0,85 * 1,55) : 4,6 - 0,8=
смотри фото</span>
12080: 63
63 191
578
567
110
63
47(ост.) 63*191+47=12033+47=12080
66500: 3200
6400 20
2500(ост.) 3200*20+2500=64000+2500=66500
65306: 121
605 539
480
363
1176
1089
87(ост.) 121*539+87=65219+87=65306