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  1. Step-by-Step Math Problem Solver - QuickMath

  2. Solve for x Calculator - Mathway

  3. Algebra Problem Solver - Mathway

  4. Equation Solver - MathPapa

  5. Solve 4x+12 | Microsoft Math Solver

  6. Algebra Calculator - MathPapa

  7. simplify 4x+12 - Symbolab

  8. Solve 4x=12 | Microsoft Math Solver

  9. How do you factor the expression 4x+12? | Socratic

  10. Tiger Algebra - A Free, Online Algebra Solver and Calculator