A process to turn a Augmented Matrix into REF to find solutions. https://www.youtube.com/watch?v=seet9VyHo3Q

Process

  1. Locate the left-most column with the first non-zero entry
  2. Swap the top-most row with the non-zero entry row
  3. Multiply the row so that the non-zero entry is equal to one
  4. Add suitable multiples of the top row to the bottom row until all entries below are equal to 0
  5. Mark the top-most row as completed, now continue the process for the bottom rows