Penyelesaian dari sistem persamaan: 3x + 7y + 2z=8 4x + 2y -5z = -19 6y – 4z = 14 adalah
A. {x = – 5, y= 3, z = 1}
B. {x = – 4, y= 7, z = 1}
C. {x = – 5, y= 2, z = 1}
D. {x = – 4, y= 8, z = 1}
E. {x = – 3, y= 6, z = 1}
jawaban;
A. {x = – 5, y= 3, z = 1}
penjelasan;