Please help!! If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation.
2x - 3y + z = -4
2x - 2y + z = -1
x - 2y + 3z = -6

Question

Please help!! If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation.
2x - 3y + z = -4
2x - 2y + z = -1
x - 2y + 3z = -6

anonymous · Answer

replace $x$ everwhere you see it in the top two equations by $2y-3z-6$

anonymous · Answer

ok for the first i got y-5z=8

anonymous · Answer

first one would simplify to $2y-5z=8$

anonymous · Answer

yeah ok you got the idea

anonymous · Answer

then once  get all those what do i do??

anonymous · Answer

or is those the final answers?? do you have to combine??

anonymous · Answer

do it for the next equation just like you did for the first one
you get $2y-5z=11$

anonymous · Answer

ok 2nd is 2y-11z-12 and 3rd is -6=-6

anonymous · Answer

that will give you the new system 
$$2y-5z=8$$
$$2y-5z=11$$

anonymous · Answer

btw this system has no solution

anonymous · Answer

THANK YOU! :)