X=5 12-7=10-x
y=13 9+12=8-y
Толя, Миша, Коля, Вера, Надя, Вика.
360+x+3=440
x=440-360-3
x=67
x:8+140=212
x:8=213-140
x:8=73
x=73*8
x=584
(x+25)*4=360
4x+100=360
4x=360-100
4x=260
x=260:4
x=65
2 * 12 856 + 684 * 63 : 7=25 712 + 43 092 : 7=25 712 + 6 156=31 868