In 8 years, Sophia's age will be 21 years old. Let x represent Sophia's current age today.
a. Write an equation that can be used to find Sophia's age today (X). [1 point)
b. Solve for x to find Sophia's age. [1 point)

She is 13 years old

Step-by-step explanation:

x + 8 = 21

x = 13

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.