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Mathematics, 18.03.2021 02:30 tiny2007

1) What is the first x in x + 3x = 16? 2) What are the x's in x + x = 4 + x?
3) What is the x in 7 + 5 = 3x?

I really don't know these.

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1) What is the first x in x + 3x = 16? 2) What are the x's in x + x = 4 + x?
3) What is the x...

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