616X + 4,224Y = 7,121 B) 1,341X - 4,2169Y = 3,147X + 3Y - 2Z = 54X - 2Y + Z = -2 4X + 2Y + Z = 6-2X - 4Y +5Z = -17 

8, - BAI THUC HANH 10 CB C1
BAI THUC HANH 10 CB C1

8,616x + 4,224y = 7,121

 b) 1,341x - 4,2169y = 3,147

x + 3y - 2z = 5

4x - 2y + z = -2

 

4x + 2y + z = 6

-2x - 4y +5z = -17

 