Level 1
Simplify: 9 - 2n - 11 + 8n.
1 m
Level 1
Simplify: 5b x 2 + 9 - 3b - 7.
1 m
Level 1
12 years ago, Donald was 8c years old.
  1. How old was Donald 5c years ago?
  2. How old will Donald be 2c years later?
2 m