What is the expression for ' twice the sum of 12 and Ethel's age ?"

Question

I need help to find the expression 

Answer 1

To write this as a mathematical expression, pick variables to represent

the unknowns:

Let E = Ethel's age

 

Twice the sum of 12 and Ethel's age:  2(E+12)

 

If you distribute the 2 through:  2(E+12) = 2E + 24

Answer 2

x = Ethel's age

 

2(x + 12) = twice the sum of 12 and Ethel's age