Question

Find if no solution, only one solution and if so, find the variables, or infinitely many solutions
x-2y+2z=-7
6x-4y-z=-2
7x-6y+z=6

Answer 1

multiply the second and third equation by 2 and you will be able to eliminate the z variable

let me know what you get for that and I'll help you from there.

Answer 2

@TuringTest
asker only wants the solution, not interested in the process, I already tried