решите примеры
1) (31-12) * (32-62) =
2) (39-57) : (27 - 18) =
3) 5 * (74-93) =
4) (7 - 13) * (192 184) =

1) (19)*(30)=570

2) (-22):9= 2(4)

3) 5*(-19)=-95

4)(-6)*8=-48