Question 1181810
<pre>
{{{system(3x[1]+6x[2]=8,
9x[1] =4)}}}

Add 0x<sub>1</sub> to the left side of the second equation:

{{{system(3x[1]+6x[2]=8,
9x[1]+0x[2] =4)}}}

Enclose in big parentheses

{{{(

matrix(2,4,3,6,"|",8,
9,0,"|",4))}}}

To form the augmented matrix, erase the x's and replace the equal
signs by a vertical line:

{{{(

matrix(2,4,3,6,"|",8,
9,0,"|",4))}}}

That's the augmented matrix.

To form the coefficient matrix, erase the vertical line and the
number after it:

{{{(

matrix(2,2,3,6,
9,0))}}}

That's the coefficient matrix.

Edwin</pre>