Preview question: $$ \frac{2 x + 4} {-7} + \frac{2 x + 6} {3} = -2 x

Technical information

Behaviour being used: Adaptive mode

Minimum fraction: 0

Question summary: $$ \frac{2 x + 4} {-7} + \frac{2 x + 6} {3} = -2 x - 20 $$

Right answer summary: -9

Question state: todo

Preview question: $$ \frac{2 x + 4} {-7} + \frac{2 x + 6} {3} = -2 x - 20 $$