The system of three linear equations in three variables below is to be solved using technology with matrices. 2x + z = 5y - 17.75
4x – 3y = 5z + 8.25
8x + 2z = y + 27 + 6.5
Which matrix or matrices could be used to solve the system of equations?

896.31 cm= km 100cm = 1m 1000m = 1km a) 0.0089631 b) 0.0089631 c) 8.9631 d) 89.631

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.