Answer:
Step-by-step explanation:
In order to balance the equation, the coefficients in front of each element must be equal on both sides of the equation. Here's one way to balance the equation:
2 AI + 3 CuSO4 ---------------> 2 AI2(SO4)3 + 3 Cu
This means that for every 2 atoms of AI and 3 molecules of CuSO4, you'll get 2 molecules of AI2(SO4)3 and 3 atoms of Cu.