What does 5 plus g equal?

Answer 1

If "g" has a value then it would just be 5+(the value)

Otherwise it would be 5+g

G is a variable and therefor could be anything. You can not solve the equation further. The answer is simply 5+G.

If you have a previous declaration that states that G=2, then 5+G would equal 7.

In computer programming, equations like this are useful for repetitious calculations. For example, if G is the variable for a score in a game, we would start with G=0 and every time you get a point, the computer would calculate G=G+1. G, currently 0, plus 1, equals 1. If you get another point then G, currently 1, plus 1, equals 2. This can be repeated as needed without changing the equation.