Respuesta :

4x+7=51
-7 - 7
--------------
4x/4= 44/4=11
Audrey is eleven years old

Audrey's age is 11.

What is Audrey's age?

The equation that can be used to represent  Audrey's age is:

4a + 7 = 51

Where a =  Audrey's age

In order to determine  Audrey's age, take the following steps:

Combine similar terms

4a = 51 - 7

Subtract similar terms

4a = 44

Divide both sides of the equation by 4

a = 44/4

a=  11

To learn more about division, please check: https://brainly.com/question/13281206