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It is equal to 2x because if you were to replace the "x" with a number say, 2 for example so 2 + 2 would be 4 and 2 times 2 would also be 4 which is what "2x" stands for (2 times x). So then if you had x + x you would get 2x.

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โˆ™ 2010-05-14 16:57:46
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Q: Why is x plus x equal to 2x?
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