Respuesta :

upandover
Hi there!

Let's use this equation:
9(9 + 16) = 12(12 + x)
225 = 144 + 12x
12x = 81
x = 6.75 or 6.8 rounded to the nearest tenth

Hope this helps!! :)
If there's anything else that I can help you with, please let me know!

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