69 is the sum of 21 and Chau's age.

oh and use the variable c to represent chaus age

pls someone respond to this question soon enough today at least

translate this sentence into an equation

c + 21 = ?

chaus age + 21 = 69

chaus age = 69 - 21 = 48.

To find Chau's age, we can subtract 21 from 69.

So Chau's age can be calculated as:
69 - 21 = 48

Therefore, Chau's age is 48.