## Quick Reference

To eliminate terms from an expression, usually through one of the four basic arithmetical operations, to produce a simplified form. For example, *x*^{2}+3*x*−2=*x*^{2}−2*x*+8 can be reduced 3*x*−2=−2*x*+8 by cancelling *x*^{2} from both sides, which is effectively subtracting from both sides. cancelling 5*y* from numerator and denominator, though care needs to be taken when division is used because the expression derived is conditional on not dividing by zero. In this case provided *y* ≠ 0.

*Subjects:*
Mathematics.