Simultaneous equations like š = 2š - 1 and š = š + 1 can be represented graphically. To solve the equations graphically, the two lines š = š + 1 and š = 2š - 1 are drawn on the same diagram.
Grade school math students are likely familiar with teachers admonishing them not to just guess the answer to a problem. But a new proof establishes that, in fact, the right kind of guessing is ...
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