Question

What is the solution of the system of equations?
2x+2y+3z=-6
3x+5y+4z=3
2x+3y+4z=-10

Answer 1

have you done system of equations of 2 variables yet?

Answer 2

yeah

Answer 3

ok, then pick 2 of those 3 up there, and cancel say "z" off it :)

Answer 4

i would use substitution. solve one of the equations for a single variable, then plug that variable into another equation and then solve for a different single variable... basically the same thing as 2 variable, just a couple extra steps

Answer 5

ok thanks guys

Answer 6

then you'd end up with a RESULTANT equation of only "x" and "y"

once that's done

pick another 2 of those 3, the one you didn't pick and another one
and cancel the same "z" from it

then you'd end up with a 2nd RESULTANT equation of only "x" and "y"

Answer 7

then solve the 2 RESULTANT equations by elimination :)

Answer 8

Ok awesome :) thats way easier