Mathematics, 17.02.2022 18:00 jaaay10

How to simplify x+9+1+3x and 5a+6c+2a+3c and
5n+6mn+3n
i am a parent and i dont understand this

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How to simplify x+9+1+3x and 5a+6c+2a+3c and
5n+6mn+3n
i am a parent and i dont unders...

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