Inequality Calculator

Solve linear inequalities step by step. Enter an inequality like 2x + 3 > 5 and get the solution set with a step-by-step explanation.

isCalculator Editorial Team Published by:
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How to use this tool?

How to Use the Inequality Calculator

  1. Enter your inequality in the input field. Use the format: ax + b < c (or >, <=, >=, =). Examples:
    • 2x + 3 > 5
    • 3x < 9
    • 4x - 2 <= 10
  2. Click "Solve" (or press Enter).
  3. View the result:
    • The solution appears in green (e.g., x > 1).
    • Below it, step-by-step work shows how the inequality was solved.
  4. If an error occurs, a red message will explain the issue (e.g., invalid format or zero coefficient).

Note: The calculator supports simple linear inequalities with one variable (x). Use decimal numbers if needed (e.g., 1.5x + 2 <= 7).

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Frequently Asked Questions

It solves linear inequalities in one variable, such as ax + b < c, ax + b > c, ax + b <= c, ax + b >= c, and also equalities.

Use the format: coefficient*x + constant < number. For example, 2x + 3 > 5. You can also omit the constant (e.g., 3x < 9).

An error message will appear indicating the correct format. Make sure to use x as the variable and standard inequality symbols.

Reviewed by Experts

Eurico José Kiala

Eurico José Kiala

Mathematician

Teacher

LinkedIn
João Lino

João Lino

Mathematician

LinkedIn
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