Preview question: $$ -3 \left( 2 x + 13 \right) = 7 \left( 2 x + 23 \right) $$

Behaviour being used: Adaptive mode

Minimum fraction: 0

Question summary: $$ -3 \left( 2 x + 13 \right) = 7 \left( 2 x + 23 \right) $$

Right answer summary: -10

Question state: todo