Inequality Solver
Solve one-variable linear inequalities in the form ax + b ? c and see when the inequality sign flips.
This solves inequalities in the form ax + b ? c, where ? is one of <, ≤, >, ≥.
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Privacy: calculations run locally in your browser. No inequality values are stored or transmitted.
How it works
Rearrangement:
ax + b ? c
ax ? c − b
Divide by a. If a < 0, reverse the inequality.
Examples
- 2x + 3 < 11 → x < 4
- -2x + 3 < 11 → x > -4 (sign flips)
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
FAQ
- What kind of inequalities does this tool solve?
This tool solves one-variable linear inequalities in the form ax + b ? c, where ? can be <, ≤, >, or ≥.
- Why does the inequality sign sometimes flip?
When you divide or multiply both sides by a negative number, the inequality direction must reverse.
- What happens if a = 0?
Then the inequality no longer depends on x. It becomes either always true or never true depending on b and c.
- Are calculations stored?
No. Everything runs locally in your browser.