yet more linear equations

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

@@ -50,3 +50,81 @@
         x & = & 7 \over 6 \\
         \end{eqnarray}
         $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-04.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        10x + 7 & = & 8 \\
+        10x + 7 - 7 & = & 8 - 7 \\
+        10x & = & 1 \\
+        10x \over 10 & = & 1 \over 10 \\
+        x & = & 1 \over 10 \\
+        \end{eqnarray}
+        $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-05.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        10x + 3 & = & 5 \\
+        10x + 3 - 3 & = & 5 - 3 \\
+        10x & = & 2 \\
+        10x \over 10 & = & 2 \over 10 \\
+        x & = & 1 \over 5 \\
+        \end{eqnarray}
+        $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-06.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        4x + 9 & = & 10 \\
+        4x + 9 - 9 & = & 10 - 9 \\
+        4x & = & 1 \\
+        4x \over 4 & = & 1 \over 4 \\
+        x & = & 1 \over 4 \\
+        \end{eqnarray}
+        $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-07.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        7x - 5 & = & 9 \\
+        7x - 5 + 5 & = & 9 + 5 \\
+        7x & = & 14 \\
+        7x \over 7 & = & 14 \over 7 \\
+        x & = & 2 \\
+        \end{eqnarray}
+        $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-08.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        3x + 9 & = & 9 \\
+        3x + 9 - 9 & = & 9 - 9 \\
+        3x & = & 0 \\
+        3x \over 3 & = & 0 \over 3 \\
+        x & = & 0 \\
+        \end{eqnarray}
+        $$
+
+    %h2 Solve for $x$ (again):
+    #solve-for-x-09.solution
+      :escaped
+        $$
+        \begin{eqnarray}
+        3x + 10 & = & 7 \\
+        3x + 10 - 10 & = & 7 - 10 \\
+        3x & = & -3 \\
+        3x \over 3 & = & -3 \over 3 \\
+        x & = & -1 \\
+        \end{eqnarray}
+        $$