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Artyom0805 [142]
3 years ago
7

Find x. (The picture has the info)

Mathematics
1 answer:
qwelly [4]3 years ago
7 0

Answer:

X=5

Step-by-step explanation:

3x+9 is twice of 12 (24). 24-9=15, and 3*5=15, so x=5.

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