WebToolArcFormula and interpretation
|x| is the distance from zero, so it is never negative.
Absolute value removes sign; it does not round or otherwise change magnitude.
Worked check
For -7, the absolute value is 7 because absolute value measures distance from zero. For +7 it is also 7, and for 0 it is 0. The operation removes sign but does not round the magnitude.
Rule: |x| is the distance from zero, so it is never negative. Absolute value removes sign; it does not round or otherwise change magnitude. For a final check, estimate the expected size of the answer before copying it, keep units consistent, and round only the displayed result rather than intermediate values. Re-enter one simple case by hand when possible; a result with the wrong sign or order of magnitude usually points to an input or reference-base mistake.