Determine the value of http://webwork2.asu.edu/webwork2_fil...103c388831.png for which the system

has no solutions.

How do i do this? im confused because how can you make a system have no solutions when it really does. I know it does because i did row operations until i got it down to the 1's in the diagonal and the rest of the entries were 0's

any help will be much appreciated. thank you :)