If |x| = 7 and |y| = 13, then which of the following could be equal to x + y?

Answer shown from explanation

Step-by-step explanation:

|x| means modulus of x such that positive or negative value of x evaluates to a positive value.

|x| = 7 is the same as x = - 7 and x = 7

Similarly,

|y| = 13 is the same as y = - 13 and y = 13;

Hence the possible values are;

7+13 = 20

7-13 = - 6

-7-13 = - 20

-7 + 13 = 6

20, - 20, - 6, 6

Step-by-step explanation:

x and y could be negative or positive.