Question 77257
When you have an equation like this, all you have to do is combine like terms, move all x terms to one side of the equation and all numbers to the other side of the equation, then divide whatever is next to the x, to get your x value.

5x + 2x - 4 = 4x + 5

7x - 4 = 4x + 5

3x = 9

x = 3  <----  answer

Hope this helps!!!