Inequality Calculator
Solves a linear inequality of the form a x + b compared to 0 and returns the range of x. With a=2, b=-4 and the 'greater than 0' option, the solution is x greater than 2.
What this calculator does
The Inequality Calculator estimates your result instantly from the values you enter, using standard math & conversions formulas. Solves a linear inequality of the form a x + b compared to 0 and returns the range of x. With a=2, b=-4 and the 'greater than 0' option, the solution is x greater than 2. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate rather than a certified or official figure.
Result
About Inequality Calculator
The Inequality Calculator solves a single linear inequality written as a x + b compared to 0. Choose one of the four comparison options and it isolates x, flipping the direction when the coefficient a is negative.
Formula & Mathematical Calculation
Solution for x = f(a (coefficient of x), b (constant), Inequality)
Calculated according to standard math formulas implemented in the calculator core.
Calculation Example
Enter a = 2, b = -4, and leave the inequality set to a x + b > 0, then click Calculate. The Solution for x box shows:
x > 2
The note reads: Isolating x (and flipping the sign if a is less than 0) gives x > 2.
Key Benefits
- Solves linear inequalities in one variable
- Offers greater-than, less-than, and inclusive comparison options
- Automatically flips the inequality when the coefficient is negative
- States the solution as a simple range for x
How to Use this Calculator
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Enter the coefficients
Type the coefficient of x into a and the constant into b. -
Choose the comparison
Select one of the four inequality options, such as a x + b greater than 0. -
Calculate and read
Click Calculate and read the Solution for x box.
Assumptions & Limitations
What the calculation assumes
- Every value you enter is treated as an exact, known amount.
- Any rate or interval you enter is assumed to hold for the whole period unless the form asks for it separately.
- Results use standard published formulas and account only for the values entered above.
- Rounding is applied for display; the underlying calculation uses your full precision.
- Results are returned in the same units you enter, unless the tool states the output unit.
What it does not cover
- Inequality Calculator produces a calculated result for reference and learning, not a certified or official measurement.
- Real-world outcomes differ when tolerances, rounding rules or local standards apply.
- Definitions and standards vary by region and change over time; verify the convention that applies to your case.
- Figures are only as accurate as the inputs you supply — check them before acting on the result.
- For work where the result carries real consequences, confirm it against an authoritative source.
Frequently Asked Questions
Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.