Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: $$ 6 + 15 + x , x = 63 $$
Right answer summary: 84
Question state: todo
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: $$ 6 + 15 + x , x = 63 $$
Right answer summary: 84
Question state: todo