Answer:
The answer is 13+x
Explanation:
The only way to solve this question is to simplify it. The reason this is, is because there is no equal sign. So we just add 9 and 4.
If you have any questions feel free to ask in the comments.
13+x
all you have to do is 9+4 which is 13 and leave the +x so you get 13+x as your answer
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