Hello, TheEmptySet!

So I know how to reduce simple fractions is Latex with

\frac{3x}{3y}=\frac{\not{3}x}{\not{3}y}

But if I try with a binomial it only crosses out the parenthesis.

Any ideas would be awesome.

I see that \cancel{ } doesn't work at this site.

The command\rlap{////}superimposes //// over the next expression.

\rlap{/////}x+y . . .

\frac{3(\rlap{////}a+b)}{\rlap{////}a+b} = 3 . . .

\rlap{////}\backslash\backslash\backslash\backslash . . .

\rlap{ooo}|||||| . . .

Some symbols can't be used. .You need to experiment.