more notes while working through linear equations

math-replay/algebra/linear-equations-2.haml

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+%html
+  %head
+    %script{:type => "text/x-mathjax-config"}
+      MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]}});
+    %script{:type => "text/javascript", :src => "http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"}
+    :css
+      .solution {
+        border-top: 1px dotted #222;
+      }
+  %body
+    %h2 Solve for $x$:
+    #solve-for-x-01.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        6x + 8 & = & 5 \\
+        -8 + 6x + 8 & = & 5 - 8 \\
+        6x & = & 5 - 8 \\
+        6x & = & -3 \\
+        6x \times \frac{1}{6} & = & -3 \times \frac{1}{6} \\
+        x & = & -3 \times \frac{1}{6} \\
+        x & = & -3 \over 6 \\
+        x & = & \frac{-1}{2} \\
+        \end{eqnarray}
+        $$