Answer:
a. Infinite solutions.
Step-by-step explanation:
Let's try solving it:
a + 3 + 2a = -1 + 3a + 4
Subtract 3a from both sides:
a + 2a - 3a + 3 = -1 + 4
3a - 3a + 3 = 3
3 = 3
So the original equation is an identity and there are infinite solutions.
