Answer:
15x, 19x, 26x, and 3x
Explanation:
To figure this out, we just need to figure out which sort of value can be combined. Every choice except 49 has a variable attached. The different variables are a, y, x, h, and g. There is only one of each variable except for x. So, you would combine each like term with x as an variable.
Hope this helps!!! Have a wonderful day :D