(now rare, chiefly law enforcement) A solution; an explanation.

To find an answer or solution to a problem or question; to work out.

(of crime) to find out the perpetrator, the motive etc

(mathematics) To find the values of variables that satisfy a system of equations and/or inequalities.

(mathematics) To algebraically manipulate an equation or inequality into a form that isolates a chosen variable on one side, so that the other side consists of an expression that may be used to generate solutions.

(transitive) To loosen or separate the parts of.