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1. |
Solve the following equation for x, y, and z:x – y + z = –1   –x + y + z = –1   x + 2y – 2z = 5 |
A. | x = 1,      y = 1,      z = –1 |
B. | x = 5/3,      y = 7/6,      z = –1/2 |
C. | x = –2/3,      y = –2/3,      z = –1 |
D. | x = –1,      y = 1,      z = 1 |
Answer» B. x = 5/3,¬†¬†¬†¬†¬†¬†y = 7/6,¬†¬†¬†¬†¬†¬†z = ‚Äì1/2 | |