Answer: Explained.
Step-by-step explanation: We are told to explain the use of equivalent fractions in writing a sum of two like fractions.
We know the definitions of equivalent fractions and like fractions.
Equivalent fractions are those which are exactly the same except some common multiplier is there to both numerator and denominator. For example 3/5 and 9/15 are equivalent fractions.
Like fractions are those which have exactly the same denominator but different numerators. For example, 3/5 and 4/5 are like fractions.
While writing the sum of two like fractions, we used equivalent fractions as follows
Thus, equivalent fractions helps a lot in adding two like fractions.