10.2 Systems of Linear Equations in Several Variables
Ideas in this lesson
- Triangular systems and back-substitution
- Solving three-variable systems by elimination
Triangular systems and back-substitution · Worked example
Solve x + y + z = 6, y − z = 1, z = 2.
Answer: (1, 3, 2)
y = 3, x = 1.