Respuesta :

Answer:

I'd say x=4.5

Step-by-step explanation:

I learned this in 6th grade so don't completely take my word for it. But you can build off of my answer probably. Sorry.
I think x is 9

They are saying that the triangle have the same sides so I set them equal to each other.

2x=x+9
X=9

Hope it helps!

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