2x – 3y + 20z = 25
A. x = 1, y = -1, z = 1
B. x = 2, y = 1, z = 0
C. x = 2, y = 1, z = 0
D. x = 1, y = 2, z = 1
Answer:A
2x – 3y + 20z = 25
A. x = 1, y = -1, z = 1 B. x = 2, y = 1, z = 0 C. x = 2, y = 1, z = 0 D. x = 1, y = 2, z = 1
Explanation: We write the equations in the form