– d) =
– 2b + 2c + 2d
2) – 5 (b + c + d) =
– 5b – 5c – 5d
3) 10 (b – c – d) =
10b – 10c – 10d
4) – 3 (b + c – d) =
– 3b – 3c + 3d
5) 5 (– b + c – d) =
– 5b + 5c – 5d
6) – 4 (– b – c + d) =
4b + 4c – 4d