Question

Julia is 3 years younger than kevin. julia is 13 years old. define a variable and write an equation to find kevin's age.

Answer 1

Explanation:

Lets define the variables first.

J - Julia

K - Kevin

Lets add the values...

J = 13

K = ?

Remember, Kevin is 3 years OLDER than Juila, so we must ADD to Juila's age to find Kevin's. So:

Kevin's Age = Julia's Age + 3

Add in the variables:

K = J+3

(You can also use x and y as the variable labels, just specify which is which in your working.)

Hope I helped!