I'm trying to delimit an equation with parentheses and it has fractions inside it, so I can't just increase the parentheses' size, because they wouldn't be correctly alligned. What I'm trying to do is the following:

```
MDC(m,n)=mindiv(m,n)$\times$ MDC $\left($ $\dfrac{m}{mindiv(m,n)}$,$\dfrac{n}{mindiv(m,n)}$ $\right)$

```

It compiles correctly until I attempt to add the parentheses like that. I've tried all possible ways to add the math mode delimiters, but all it does is give me a series of errors. How do I delimit bigger equations like this in math mode? I found out that the following works:

```
$\left( \right)$

```

However, if I attempt to wrap the equation like that (with the delimiters at the beginning and at the end only), I still get a series of errors.