$\displaystyle \frac{-4x}{x-3}=\frac{x-1}{2}$

When I input this into wolfram and click on step by step solution, the next step looks like this:

$\displaystyle -8x(x-3)(x-1)$

so I assume the step they did was to multiple the numerator of the first fraction by the denominator of the second giving $\displaystyle -4x\times 2$ and then joining the $\displaystyle x-3$ and $\displaystyle x-1$

If this is true then does this apply to every fraction of this type?

So my next move would be to multiple $\displaystyle -8x$ by each term in the brackets? I don't get what to do next. Fractions really suck