Answer
a = 3.5
Work Step by Step
Our goal is to isolate a. To accomplish this we will first subtract 4a from both sides to get all of the a's on one side:
6a - 5 = 4a + 2
2a - 5 = 2
We will then isolate a by adding 5 to both sides and then dividing both sides by 2:
2a - 5 = 2
2a = 7
a = 3.5