Hi,

I'm looking for help with solving these two systems of equations (any method can be used):

1.

-4x - 5y - 8z = 268

-10x + 7y + 6z = -786

-12x + 9y - 2z = -548

2.

-5x - 4y + 12z = -140

9x - 8y + z = -649

3x - 2y + 6z = -290

Thanks for your help.