Answer
I think that there's 5 but i'm probably wrong so I wouldn't use my answer if I were you
Answer:

Step-by-step explanation:
Hope it will help you a lot.
Answer:
See below.
Step-by-step explanation:
(Given)
(Subtracted 3 on both sides)
(Subtracted ax on both sides)
(Factor out x from x - ax)
(Divided 1 - a on both sides)