 8X - 7Y - 9Z = 0 00X + 2Y + Z = -55X + 2Y + Z = -29

000. - BAI THUC HANH 10 CB C1
BAI THUC HANH 10 CB C1

000.

 

8x - 7y - 9z = 0

00

x + 2y + z = -5



5x + 2y + z = -29

.000000000000000000 b)



x -3y + z = -10

 + − =

2

2

2 1

x y xy