The absolute worst way to write a simultaneous equations question:

${\color{yellow}x} + {\color{blue}x} = {\color{green}x}$
${\color{green}x} + {\color{blue}x} = 4{\color{yellow}x}$
${\color{yellow}x} + {\color{green}x} = 3{\color{blue}x}+1$
Find $\color{yellow}x$, $\color{blue}x$, and $\color{green}x$.

@mscroggs or if we're rendering in black & white, mix in $\mathcal{X},\mathbb{X},X,\mathsf{X},\mathrm{X},$ etc.

@btcprox $\mathbb{X}\times\mathsf{X}=\mathrm{X}$

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.

Use $ and $ for inline LaTeX, and $ and $ for display mode.