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

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a
There is only solution  2)  3)  4)
b
There exists infinitely many solutions
c
There is no solution
d
none

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detailed solution

Correct option is A

Augmented matrix is 123121325594 R2−2R1R3−5R1~12310−3−300−5−6−1R3−53R2~3−1150−20000−10  there is only one solution


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If the system of equations ax + y= 3, x + 2y = 33x + 4y = 7 is consistent, then value of a is given by 


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