When adding or subtracting fractions, they should have the same denominator. In this exercise, we have two fractions with different denominators.
16/25 + 3/10
To find the smallest common denominator we should rewrite the denominators of both fractions using only prime numbers.
25 = 5* 5
10 = 2* 5
Now, in order to get a common denominator we need to multiply each fraction by factors that appear only in the denominator of the other fraction. Therefore, we multiply 1625 by 2 and 310 by 5.
