posted by Ann .
Solve the equation 2x + 5y - 3z = -1. Write the general solution as a matrix equation.
I did some guessing and ended up getting this much:
[x]= [-1/2 _ _ ] X 
[y]= [ 0 1 0 ] X [s]
[z]= [ 0 0 1 ] X [t]
however I still can't figure out the last two values in the first row