Question 1008247
<pre>
{{{matrix(1,5,3m, add, 10, is, 16)}}}

Change the word "add" to +
Change the word "is" to "="

{{{matrix(1,5,3m, ""+"", 10, ""="", 16)}}}

Add -10 to both sides:

{{{matrix(2,5,3m, ""+"", 10, ""="", 16,
              "",    "",-10, "",    -10)}}}
--------------------------
{{{matrix(1,8,3m, ""+"","", 0,"", ""="","", 6)}}}

That's     {{{matrix(1,3,3m,""="", 6)}}}

Now divide both sides by the coefficient of m, which is 3

           {{{matrix(1,3,3m/3,""="", 6/3)}}}

Cancel on the left and divide on the right:

           {{{matrix(1,3,cross(3)m/cross(3),""="", 2)}}}

           {{{matrix(1,3,m,""="", 2)}}}  

Edwin</pre>