1 -2 4 x
3 4 7 y
1 4 6 z

What I will do elemeantry row operations to turn diagonal matrix

Question

1  -2   4   x
3   4    7   y
1   4    6   z

What I  will do elemeantry row operations to turn diagonal  matrix

dumbcow · Answer

wow these are not fun to do by typing...
well you can multiply a scalar by any row, you can add rows
the goal is to have 1's in diagonal and zeros elsewhere

you should first try to work on 1st column, get bottom 2 numbers to be 0
then 2nd column, get bottom number to be 0
then work on eliminating top corner numbers

dumbcow · Answer

im assuming x,y,z represent  constants

anonymous · Answer

You know how to set a matrix to echelon form? And then to row reduced echelon form?