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Absolute Value Calculator
Calculate |x| or solve a linear absolute value equation or inequality of the form |a·x + b| compared with c. The solution is shown with interval notation and a number line.
How do I solve an absolute value equation?
For |a·x + b| = c, split it into a·x + b = c and a·x + b = −c. This calculator also handles strict and inclusive inequalities for one linear expression inside the absolute value.
Frequently asked questions
How do I solve an absolute value equation?
For |a·x + b| = c, split it into a·x + b = c and a·x + b = −c. This calculator also handles strict and inclusive inequalities for one linear expression inside the absolute value.
Are my values uploaded?
No. The calculation runs in this browser. The values are not uploaded or saved by this tool.
What does absolute value mean?
Absolute value is a number’s distance from zero. For example, |−5| and |5| are both 5.
How do I solve |x| = 3?
The solutions are x = −3 and x = 3, because both numbers are 3 units from zero.
Can this solve any absolute value expression?
It solves |a·x + b| compared with one real number. It does not solve quadratics, nested absolute values, multiple variables or general symbolic expressions.