I want to know if anyone can help with a math textbook. It is page 302, evens only. Skip word problems. Show work if you can, if you can't, then it's alright.

Step-by-step explanation:
Hopefully I'm right,but what you do is add the ones with variables together so
Question 15
so 3a+3a= 6a and 7+2=9
so you have to add the ones that are similar but never add
37. 5x-2y
38. -3a+2b