x y z rhs

Question

1 1 2 3
2 1 6 3
0 3 4 13
multiply some number by r2 and add result to r3(2)
have to get o in r3 (1)-
steps:------------------

Answer 1

x y z rhs
1 1 2 3
2 1 6 3
0 3 4 13
multiply some number by r2 and add result to r3(2)
have to get o in r3 (1)-
steps:-----------------
answer quick