Answer:

Step-by-step explanation:
In a double displacement reaction, the metal cations change partners with the anions.
3Na₂CO₃(aq) + 2AlCl₃(aq) ⟶ 6NaCl(aq) + Al₂(CO₃)₃(s)
This is also a precipitation reaction, because the aluminium carbonate is insoluble and precipitates from solution.