Question 14 Marks
Solve the following linear equations by Cramer’s Rule.
(iii) x – y + 2z = 7, 3x + 4y – 5z = 5, 2x – y + 3z = 12
6 questions · self-marked practice — reveal the answer and mark yourself.
(iii) x – y + 2z = 7, 3x + 4y – 5z = 5, 2x – y + 3z = 12
(ii) $\frac{1}{x}+\frac{1}{y}+\frac{1}{z}=-2, \frac{1}{x}-\frac{2}{y}+\frac{1}{z}=3, \frac{2}{x}-\frac{1}{y}+\frac{3}{z}=-1$
(i) 2x – y + z = 1, x + 2y + 3z = 8, 3x + y – 4z = 1
(i) 2x – y + z = 1, x + 2y + 3z = 8, 3x + y – 4z = 1