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131 lines
5.8 KiB
HTML
131 lines
5.8 KiB
HTML
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<!-- Mirrored from www.mathsisfun.com/algebra/add-subtract-balance.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:48:08 GMT -->
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<title>Balance when Adding and Subtracting</title>
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<meta name="description" content="Have a play with this and you will learn about keeping the balance in Algebra" />
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<h1 align="center">Balance when Adding and Subtracting</h1>
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<p align="center"><i>Algebra is great fun - you get to solve puzzles!</i></p>
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<p>When we add or subtract the same thing from both sides the equation <b>stays in balance</b>.</p>
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<p>Watch the equation below. Use the <span class="largest">+x</span>, <span class="largest">−x</span>, <span class="largest">+1</span>, <span class="largest">−1</span> buttons. Try to get "x = (something)"</p>
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<p> </p>
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<script type="text/javascript">balanceMain();</script>
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<p> </p>
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-->
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<h2>Things to try</h2>
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<p>Each "equation" will have a solution like "x=2" (or maybe "x=3", etc). Try to see all the different ways this answer can be hidden.</p>
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<table width="90%" border="0" align="center">
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<tr>
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<td><img src="../images/style/right-arrow.gif" width="46" height="46" alt="right arrow" /></td>
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<td>First, try to <b>solve</b> the equation by adding and subtracting until you get an answer like <b class="large">x = (value)</b></td>
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</tr>
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<tr>
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<td><img src="../images/style/right-arrow.gif" width="46" height="46" alt="right arrow" /></td>
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<td>Then add and subtract some more until you get <span class="large">x - <b class="large">(value)</b> = 0 </span></td>
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</tr>
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<tr>
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<td><img src="../images/style/right-arrow.gif" width="46" height="46" alt="right arrow" /></td>
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<td>Then try to get a solution like <span class="large"> - <b class="large">(value)</b> = -x</span></td>
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</tr>
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<tr>
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<td><img src="../images/style/right-arrow.gif" width="46" height="46" alt="right arrow" /></td>
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<td>Then just add and subtract different amounts to see all the possibilities.</td>
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</tr>
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<tr>
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<td> </td>
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<td> </td>
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</tr>
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<tr>
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<td> </td>
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<td><i>Now press "New Equation" and try out some more ... !</i></td>
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</tr>
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</table>
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<br />
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<div class="related">
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<a href="introduction-multiply.html">Introduction to Algebra - Multiplication</a>
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<a href="index.html">Algebra Menu</a>
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Copyright © 2018 MathsIsFun.com
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