How do you work out non unit fractions?

To work out non-unit fractions, first identify the numerator and denominator of the fraction. You can simplify the fraction by finding the greatest common divisor (GCD) of both numbers and dividing them by this value. If you need to perform operations, such as addition or subtraction, ensure that the fractions have a common denominator before combining them. For multiplication or division, simply multiply or divide the numerators and denominators respectively.