Question

If x=9 and y=- -2 evaluate the following expression:

x+y

Answer 1

x + y = 11

Explanation:

You would need to substitute the numbers into the expression.

Evaluate means that we need to work out what the answer would be.

x + y is equivalent to 9 - - 2.

- - is equivalent to +.

Therefore you would do 9 + 2, which equals 11.

Hope this helps :)