Grace is 4 years older than Elena. If Grace is 9 years old, how old is Elena?

Answer 1

Let x be Elena's age.

Since Grace is 4 years older than Elena, Grace's age is x+4

We are told Grace is 9 years old, so x+4 = 9

We then solve for x to get Elena's age:

x +4 = 9

x + 4 -4 = 9 - 4

x = 5

Answer 2

Grace is 4 years older than Elena. If Grace is 9 years old, how old is Elena?

Use the variables G for Grace and E for Elena. Now assign values to those variables. Meaning how much is G worth. Assign values to G and solve to see how much E is worth.

G=9

G=E+4

9=E+4

-4 -4

5=Elena