Help me answer the problem using matrices operations with step-by-step complete solutions and box the final answer. Show all solutions by writing them on clean paper. Thank you again. Take note: SOLVE...

Help me answer the problem using matrices operations with step-by-step complete solutions and box the final answer.Show all solutions by writing them on clean paper.
Thank you again.

Take note:
SOLVE THE SYSTEM OF LINEAR EQUATIONS AS STATED. USE MANUAL


CALCULATIONS FIRST THEN CREATE AN EXCEL PROGRAM THAT WILL SHOW


THE STEP-BY-STEP PROCEDURE OF THE TECHNIQUE.

Extracted text: X1 + 3x2 + 5x3 + 7x4 = 8 7x1 + 9x2 + 2x3 + 5x4 = 0 2. 5x1 + 7x2 + 7x3 + 7x4 = 8' 2x1 + 2x2 + 3x3 + 3x4 = 4 GAUSS-JORDAN ELIMINATION