Answer:
x = infinite amount of solutions
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS 
- Brackets 
- Parenthesis 
- Exponents 
- Multiplication 
- Division 
- Addition 
- Subtraction 
Equality Properties 
- Multiplication Property of Equality 
- Division Property of Equality 
- Addition Property of Equality 
- Subtract Property of Equality
Algebra I
Explanation:
Step 1: Define
5x - 3 = 3(2x - 1) - x
Step 2: Solve for x
- Distribute 3: 5x - 3 = 6x - 3 - x
- Combine like terms: 5x - 3 = 5x - 3
- Add 3 to both sides: 5x = 5x
- Divide 5 on both sides: x = x
Here we see that x does indeed equal x.
∴ x = infinite amount of solutions.