Starting with system of equations:
x+2y+10a+0b = 30
2x+4y+6a+0b = 20
2x+8y+0a+6b=40
Write an augmented matrix using the above equations.
\left|\begin{array}{cccc | c} 1 & 2 & 10 & 0 & 30 // 2 & 4 & 6 & 0 & 20 // 2 & 8 & 0 & 6 & 40 \end{array}\right|
Begin row-reduction techniques.
\left|\begin{array}{cccc | c} 0 & 0 & 7 & 0 & 15 // 2 & 4 & 6 & 0 & 20 // 2 & 8 & 0 & 6 & 40 \end{array}\right|