Answer:
Infinitely many solutions valid for x.
Step-by-step explanation:
For this problem, let's attempt to solve for x:
3x - x - 5 = 2(x + 2) - 9
2x - 5 = 2x + 4 - 9
2x - 5 = 2x - 5
2x = 2x
x = x
Note, that since this problem has reduced to the equation x = x, this means that it doesn't matter what value x holds, this equation will always be true.
To answer this question, we can simply say there are infinitely many solutions that the value x can hold which will make this equation true. (I.e., x will always be equal to x)
Cheers.