What should we multiply the 2nd equation by in order to eliminate the y using the first two equations i e what multiplier should be written where the hand is shown below so that the y s will be eliminated 23x y 4z 8 1 5x 2y 7z 12 6x 2 82 16 5x 2x 72 12 0 2 1 5 Z 4 2x 5y 3z 10 3x y 4z 8 5x 2y 7z 12 1 2