Answer:
x= 2/5 y - 1/5 z
x= 3/2 + 1/2 y -1/2 z
x = 6 - 4/3 y
Explanation:
5x – 2y + z = 0
5x=2y-z
* Moving variables to the right side and changing their signs
* divide both sides by 5
Answer: x= 2/5 y - 1/5 z
2x - y + z = 3
2x = 3 + y - 2
Answer: x= 3/2 + 1/2 y -1/2 z
* move variables to the right sides and change their signs
* divide both sides by 2
3x + 4 y = 18
3x/3 = 18 - 4/3
Answer: x = 6 - 4/3 y
* Move variables to the right side and change its sign
* divide both sides by 3