# Mathematics Weblog

This site uses LatexRender for the mathematics

## Cancelling

Tuesday 20 April 2004 at 4:27 pm | In Articles | 1 CommentStudents love to cancel wherever they can, so much so that the book Comic Sections (now out of print) had the following joke:

*The student law of universal cancellation: If the same symbol x occurs in any two different places on the one page it may be cancelled*

So you get horrors like

And yet strange things can happen. It is true that .

What is remarkable is that you can have as many sixes as you like and cancel them as many times as you like so, for example, . Can you prove this is true? Can you find 3 other similar fractions?

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my math teacher in high school went over the same idea of canceling versus reducing often.

He used the example 16/64 and 64/16. Without the 6s, it makes a true statement.

Comment by chris — Saturday 18 September 2004 3:35 am #