Angel Milko Santiago

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How can i learn about this in khan academy?

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Thankyou. @Admiral Betasin, can i ask more questions?

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What about this one? Translate into a variable expression. Then simplify the expression. 2. 8 more than the sum of a number and 11 How can i solve it?

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@Admiral Betasin, then how should I answer that question? I dont understand