Here's the question you clicked on:
masha2204
Solve this system w/Elimination x+y+z=3 2x-y+z=2 z-2y+2z=1
For the last equation, did you mean to write x-2y+2z=1?
scale the top equation to eliminate the same variables in the bottom 2 this turns the solution process into a system of 2 eqs with 2 unknowns scale one to eliminate the a variable in the other which creates a system of 1 eq with 1 unknown solve the unknown and work it back up thru the others