Question

. Solve: [x 2y 3z] + 3 (-y z 2x] - 2 [z -x 2y] = [-11 15 7]
plz explain in brief...​

Answer 1

Step-by-step explanation:

[x 2y 3z] +[-3y 3z 6x] -[2z -2x 4y] = [-11 15 7]

now adding all of these we get

[x+6x+2x 2y-3y-4y 3z+3z-2z] = [-11 15 7]

[9x -5y 4z] = [-11 15 7]

now comparing on both the sides we get

9x=-11, -5y=15, 4z=7

x=-11/9, y=-15/5, z=7/4

y=-3