Question 176742
There are three elementary row operations:


1.  Switching the position of two rows.  Obviously, you can just switch them back again.


2.  Multiplying each element of a row by a non-zero constant.  Just multiply that row by the reciprocal of the non-zero constant.


3.  Replacing a row with the sum of that row and a multiple of another row.  Just subtract the multiple again.


So, the answer to your question is yes.