Question

Solve using row operations:
3x – 2y + 5z = - 17
2x + 4y - 3z = 29
5x - 6y - 72 = 7

Answer 1

Solutions on pics

  please review if not commet for doubts

The answers are as follows  

pic 1  exc 2

pirc 1 exc 1

pic 3 exc3