Question

solve by elimination

x-y-2z=4
-x+2y+z=1
-x+y-3z=11
please help i forgot how to do it

Answer 1

Give me a sec, its a long process lol

Answer 2

ok thanks

Answer 3

do you HAVE to use elimination?? lol

Answer 4

yeah

Answer 5

Damn.

Answer 6

can you do this one ?

a+b+c=-3
3b-c=4
2a-b-2c=-5

Answer 7

OH! I got it, I was being stupid for a sec...

Answer 8

so can you explain it to me?

Answer 9

http://www.youtube.com/watch?v=aPKz7011lAA

Answer 10

what did you multiply it by?

Answer 11

watch the video.. I can't explain it.. lol sorry man I thought I knew