What are reciprocals?

Reciprocals are defined as pairs of numbers that multiply together to equal 1. Each number in the pair is the inverse of the other. For example, the reciprocal of 2 is 1/2, because 2 multiplied by 1/2 equals 1. This concept is fundamental in various areas of mathematics, including fractions, algebra, and solving equations. Recognizing that multiplication of a number by its reciprocal results in 1 is essential for understanding operations involving fractions and for simplifying equations. Therefore, the definition aligns perfectly with this answer choice, highlighting the relationship between the two numbers in terms of multiplication.