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Why does y plus y equal 2y?

Updated: 9/25/2023
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8y ago

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When you have a variable by itself either it be x or y there is always an invisible place holder before it. So a normal "y" would be "1y". So when you put 1y + 1y you get 2y.

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8y ago
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Q: Why does y plus y equal 2y?
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