diff --git a/math-replay/algebra/linear-equations-2.haml b/math-replay/algebra/linear-equations-2.haml index 3b5c3c6..a8c60fb 100644 --- a/math-replay/algebra/linear-equations-2.haml +++ b/math-replay/algebra/linear-equations-2.haml @@ -23,3 +23,30 @@ x & = & \frac{-1}{2} \\ \end{eqnarray} $$ + + %h2 Solve for $x$ (again): + #solve-for-x-02.solution + :escaped + $$ + \begin{eqnarray} + 10x - 2 & = & 8 \\ + 10x - 2 + 2 & = & 8 + 2 \\ + 10x & = & 10 \\ + 10x \over 10 & = & 10 \over 10 \\ + x & = & 10 \over 10 \\ + x & = & 1 \\ + \end{eqnarray} + $$ + + %h2 Solve for $x$ (again): + #solve-for-x-03.solution + :escaped + $$ + \begin{eqnarray} + 6x - 4 & = & 3 \\ + 6x - 4 + 4 & = & 3 + 4 \\ + 6x & = & 7 \\ + 6x \over 6 & = & 7 \over 6 \\ + x & = & 7 \over 6 \\ + \end{eqnarray} + $$