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Which are equivalent expressions?
Check all that are true.

y + x = 2x

x + x + x + x = 4x

x + x = 2x

x + y + y + x = 2x + 2y

x + y + x + x = 2x + y

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Answer:

Which are equivalent expressions?

Check all that are true.

y + x = 2x

x + x + x + x = 4x (true)

x + x = 2x (true)

x + y + y + x = 2x + 2y (true)

x + y + x + x = 2x + y

Step-by-step explanation:

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