Two more than 5 times a number is 77

I believe that you are looking for the equation.
Equation:
5x + 2 = 77

If you need to solve for x this is what you need to do:
First, subtract 2 from both sides:
5x + 2 = 77
     - 2    - 2
5x = 75
Next, divide by 5:
5x = 75
(Divide by 5 from both sides)
x = 15

I hope this helps!