Question

X + 2y + 5z = -17
2x – 3y + 2z = -16
3x + y - z = 3

Answer 1

first one : x=−2y−5z−17

2nd one: x= 3 /2 y−z−8

3rd one: x= −1 /3 y+ 1 /3 z+1

Explanation: