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Variable/Problems

Revision as of 20:34, 15 November 2007 by Temperal (talk | contribs) (creation)
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Preintroductory

P1

Problem

What number, when added to $7$, gives a sum of $10$?

Solution

We set up the equation: $x+7=10\Rightarrow x+7-7=10-7\Rightarrow x=\boxed{3}$

Introductory

Intermediate

Olympiad

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