Question

solve the equation by using gauss-jordan method : x + y + z = 1, 2x + 2y + 3z = 6, x + 4y + 9z = 3​

Answer 1

Answer:

∴ x=7,y=−10,z=4

Step-by-step explanation:

Given equation  

x+y+z=1−−−−(1)

2x+2y+3z=5−−−−(2)

x+4y+9z=3−−−−(3)

(2)−2×(1) ⇒  

  z=4

2x+2y+3z=62x+2y+2z=2

​

 

(2)−2×(1) ⇒  

−3x+3z=−9−x+z=−3x=z+3=7

x+4y+9z=34x+4y+6z=12

​

 

(1) ⇒ x+y+z=1

7+y+4=1

y=−10

∴ x=7,y=−10,z=4

​

Answer 2

Answer:

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