1. The problem is to express a number or expression as a fraction. 2. A fraction is a number expressed as $\frac{a}{b}$ where $a$ and $b$ are integers and $b \neq 0$. 3. To convert a decimal or other form to a fraction, identify the numerator and denominator. 4. For example, if the number is $0.75$, write it as $\frac{75}{100}$. 5. Simplify the fraction by dividing numerator and denominator by their greatest common divisor (GCD). 6. For $\frac{75}{100}$, the GCD is 25, so $$\frac{75}{100} = \frac{\cancel{25}3}{\cancel{25}4} = \frac{3}{4}$$ 7. Thus, $0.75$ as a fraction is $\frac{3}{4}$. 8. If you provide a specific number or expression, I can convert it to a fraction for you.