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Cancelling terms in maths expressions

A technique used when explaining the behaviour of expressions or equations (often for pedagogical purposes). The cancel package provides several variants of cancellation marks (“\”, “/” and “X”), and a means of cancelling ‘to’ a particular value.

Documentation of cancel is in the package file.

cancel.sty
macros/latex/contrib/cancel (or browse the directory); catalogue entry

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URL for this question: http://www.tex.ac.uk/cgi-bin/texfaq2html?label=cancellation

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This is FAQ version 3.27, released on 2013-06-07.