To remove equivalent quantities of opposite signs, or on opposite sides of an equation, account, etc.; to balance a quantity of opposite sign, so…

transitive. Mathematics. To express (an equation) in its simplest terms; to simplify. Obsolete. rare.

Mathematics. To cancel, eliminate, cause to disappear. Obsolete.

transitive. Mathematics. To remove (a constant, variable, factor, etc.) from an equation, set of equations, or matrix by algebraic manipulation; esp.…

Mathematics. To get rid of (an unknown quantity, etc.); = eliminate, v. Obsolete.

transitive. Mathematics. To convert (a function, expression, etc.) into a rational form; to remove irrational quantities from.