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[" प्र.क्र.25.आव्यूह विधि से समीकरण को ह...

[" प्र.क्र.25.आव्यूह विधि से समीकरण को हल किजिए - "],[qquad [x+y+z=9],[2x+5y-7z=52,],[2x-y-z,=0]]

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By using Cramer's solve x+y+z=9,2x+5y+7z=52,2x+y-z=0

[[x+y+z],[x+z],[y+z]]=[[9],[5],[7]]

For the equations x+2y+3z=1, 2x+y+3z=2, 5x+5y+9z=4

Add : 8x - 3y + 7z, -4x + 5y - 4z, -x - y - 2z

x+y+z=4 2x-y+z=-1 2x+y-3z=-9

Add 2x - 3y + z , 5y - x + 7z and 3x - y - 6z.