Algebra calculator with steps — solve linear and quadratic equations

Step-by-step worked examples: solve linear equations, rearrange simple formulas, and solve quadratics with numeric walkthroughs.

Tool

Use the main algebra calculator for interactive calculations: Open algebra calculator.

Examples

  1. Solve a linear equation
    Problem: 3x + 5 = 20
    1. Subtract 5 from both sides: 3x = 15
    2. Divide by 3: x = 5
    3. Answer: 5
  2. Rearrange a formula (perimeter → radius)
    Problem: Given P = 2πr, solve for r when P = 31.4159
    1. Rearrange: r = P / (2π)
    2. Compute: r ≈ 31.4159 / (2 * 3.14159) ≈ 31.4159 / 6.28318 ≈ 5
    3. Answer: r ≈ 5
  3. Solve quadratic
    Problem: x^2 − 5x + 6 = 0
    1. Factorize: (x − 2)(x − 3) = 0
    2. Roots: x = 2 or x = 3
    3. Answer: 2, 3

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