To express the number 45 as a fraction, we can represent it as 45 over 1. This is because any whole number can be converted into a fraction by placing it over 1. Therefore, the fraction equivalent to 45 is:
45/1
Additionally, if you want to convert 45 into a fraction with a different denominator, you can multiply both the numerator and the denominator by the same non-zero integer. For example, if we multiply by 2, we get:
(45 × 2) / (1 × 2) = 90/2
So, 90/2 is also an equivalent fraction of 45. The key takeaway is that any fraction representing a whole number can be created by placing that number over 1 or by scaling it with equal non-zero factors.