Solve the model for both equilibrium prices and both

equilibrium quantities.

Model:

_d1 = 10 2₁ + ₂ (1)

_s1 = 2 + 3₁ (2)

_{d1 s1} = 0 (3)

_d2 = 15 + _{1 2} (4)

_s2 = 1 + 2₂ (5)

_{d2 s2} = 0 (6)

1. Which equations in the model are equilibrium conditions? Behavioural

equations?

2. How many endogenous variables are there in the model?

3. Solve the model.