In mathematical writing, it is important to use the correct syntax to ensure that your equations are clear and easy to understand. One important aspect of this is writing fractions in a way that is both concise and unambiguous. The best way to write simple fractions in math mode is to use the LaTeX syntax \frac{numerator}{denominator}.
For example, to write the fraction one-half, you would use the following code: \frac{1}{2}. This will produce the fraction 1⁄2.
