Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: $$ -4 \left( 16 + 2 x \right) - 5 \left( -2 x - 20 \right) = -6 \left( 2 x + 15 \right) $$
Right answer summary: -9
Question state: todo
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: $$ -4 \left( 16 + 2 x \right) - 5 \left( -2 x - 20 \right) = -6 \left( 2 x + 15 \right) $$
Right answer summary: -9
Question state: todo