- 2x + 10y + (- 7)z = 0
- 2x + 10y - 7z = 0
- 2x = - 10y + 7z
x = 5y - 7/2z
- 1x + (- 7)y + 3z = - 4
- x - 7y + 3z = - 4
- x = - 4 + 7y - 3z
x = 4 - 7y + 3z
- 2x + 10y + (- 7)z = 0
- 2x + 10y - 7z = 0
- 2x = - 10y + 7z
x = 5y - 7/2z
- 1x + (- 7)y + 3z = - 4
- x - 7y + 3z = - 4
- x = - 4 + 7y - 3z
x = 4 - 7y + 3z