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Simutaneosly solve x-5y-z=13 2x+y+z=0 -3x+y+2z=11

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I know how to solve 2 simutaneous equations but no idea about 3
i rather the elimination method :P
ok, so if i help you get 2 equations in x and y only , will you be able to solve the rest ? 1) Add 1st and 2nd equation, what u get ?

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i just need the steps in which to complete it i think
now multiply 1st equation by 2
:O how ?
now add it with 3rd equation.....
-x-9y=37 Btw does it matter if you add the 2nd to the 3rd eqution instead of 1st to 3rd?
if you add 2nd and 3rd equation, you could not have eliminated 'z'
now can you find 'x' and 'y' ?
now can u find z ?
mhm... I sub x and y into the 1,2,3 equation?
ok z =6 thank you
yes, correct :) ask if any doubts.

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