Question

Simplify the following expression by adding like terms: 17x + 3y - 4x + 4y

10x + 10y
13x + 7y
4x + 2y
None of the above

Answer 1

13x + 7y

Explanation:

You add the 17x + -4x. so you subtract 4 from 17 because a positive plus a negative means subtraction. you then add 3y + 4y, and 3 plus 4 equals 7 :)

Answer 2

21x+7y (None of the above)

Explanation to the answer: