cascadecoder.github.io/variables.html at main · cascadecoder/cascadecoder.github.io · GitHub

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    <title>Variables | rowannerd</title>
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    <h1 class="middle">Variables | rowannerd</h1>
    <h2>Contentents</h2>
    <ul><b>
      <li><a href="#intro">Introduction</a></li>
      <li><a href="#wvariables">What <i>are</i> Variables?</a></li>
      <li><a href="#equation">How to Solve Equations</a></li>
      </ul></b>
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    <h2 id="intro">Introduction</h2>
    <p>Variables are used in every day life, and just knowing about them will unlock a whole other world of mathematics.</p>
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    <h2 id="wvariables">What Exactly are Variables?</h2>
    <p>Variables are 'substitutes' for unknown values. They are most commonly used as letters (A-Z), but mostly <b>x, y, and z</b>. For example, to find the area of a rectangle, you use
      this formula: A = L x W. A is the area, L is the length, and W is the width. Here is another example: 2 + X = 5. We are trying to solve for X, but it is not alone on one side
      of the equals sign. <i>Go <a href="#example">here</a> to learn about how to solve it.</i>
    </p>
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    <h2 id="equation">How to Solve Equations</h2>
    <p>Solving equations means to find the value of the variable. To do this, you must have the variable on one side of the equation with <b>nothing next to it</b> except
      for the equals sign. <br><br> <span id="example">Here is the example from earlier: </span>2 + X = 5. See how 'X' is next to 2? We need to get 2 to the other side of the
      equation to isolate 'X'. To do that, we need to use <b>INVERSE OPERATIONS!</b> They are basically the opposite of the number. The opposite of 2 is -2, so we subract two from
      both sides. This leaves us with X = 5 - 2  ->   X = 3! We solved for X!
    </p>
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    <i><h3>Notes</h3>
      <p>Thanks thanks especailly to my math teacher!</p></i>
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    <p><i>©rowannerd 2021</i></p>
    <p>For more, go to our <a href="https://cascadecoder.github.io/homepage.html">homepage</a>!</p>
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