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Do you know matrices?

nope. i think it has to be the traditional way

Then you need to solve for each variable one at a time. Do you need help getting started?

@rshextall yes please! :)

Then lets start with the first equation and solve for x.

Just add 2y and subtract z from both sides of the equation
\[x-2y+2y+z-z=4+2y-z\]
\[x=4+2y-z\]

Do you see what happened there?

yup !

Then you need to plug it into one of the other equations and solve for either y or z

so plugging it into the 2nd equation mates it 2y-2z=6 ? then?

Right!!!

then?

Then solve for either y or z

Then you have to both x and the other into the last equation and solve for the last variable

Did you get it?

z=-1 y=2 x=9. yup i got it thanks!