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klio [65]
3 years ago
6

Pleaseee help me!!! I need the answer!

Mathematics
2 answers:
lora16 [44]3 years ago
3 0
I don’t know how to
Hitman42 [59]3 years ago
3 0

Answer:

3x

Step-by-step explanation:

12-9=3+x=3x

i think this is the answer

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