Sunday, October 30, 2016

`x + 4z = 1, x + y + 10z = 10, 2x - y + 2z = -5` Solve the system of linear equations and check any solutions algebraically.

Eq 1 : `x+4z=1`


Eq 2 : `x+y+10z=10`


Eq 3 :`2x-y+2z=-5`


Multiply equation 1 by -1,


`-1(x+4z)=-1`


`-x-4z=-1`


Now add the above equation and equation 2,


`(-x-4z)+(x+y+10z)=-1+10`


Eq 4:`y+6z=9`


Multiply equation 1 by -2,


`-2(x+4z)=-2`


`-2x-8z=-2`


Now add the above equation and equation 3,


`(-2x-8z)+(2x-y+2z)=-2+(-5)`


Eq 5 : `-y-6z=-7`


Now add the equation 4 and equation 5 i.e.,


`y+6z=9`


`-y-6z=-7`


adding the above equations,


0=2


Hence the equations are inconsistent and have no solution

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