Answer:
a = (3 + 2b) / 3
Step-by-step explanation:
1) Move 2b to the right.
-3a + 2b = -3
-3a = -3 - 2b
2) Leave only a on the left.
a = (-3 - 2b) / (-3)
a = -(3 + 2b) / (-3)
