math (Matrix)

solve the equations by using
a) the adjoint matrix
b) elementary row operations

i) x+y+z=6
2x-y+z=3
x+4y-z=6

ii) 3p-3q+r=1
-3p+5q-2r=-1
p-2q+r=3

iii)-12a+b+17c=-14
2a-b+3c=5
8a+b-13c=-3

thanks sir/madam

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  1. Calculate the following or give reason why the calculation is not possible

    B/3

    where matrixB = 1 3 0
    -1 6 -3

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    posted by prash

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