Answer:
… you can write it in the form ax = b (a ≠ 0).
Explanation:
In that case, there is one unique solution: x = b/a.
If a = 0 and b ≠ 0, we get 0x = b , and there are no solutions.
If a = 0 and b = 0, we get 0x = 0, and there are an infinite number of solutions.