To solve for 'a', you need to isolate 'a' on one side of the equation. Here are the steps:
Starting with the equation: 3a + 4b = c
Subtract '4b' from both sides to get 'a' on its own:
3a = c - 4b
Finally, divide both sides by '3' to solve for 'a':
a = (c - 4b) / 3
So, the solution to the equation in terms of 'a' is a = (c - 4b) / 3.