Question

Solve the system by elimination.

x+y+z=7
x+2y+2z=11
3x+y-z=9

x=? , y=? , z=?

Answer 1

add equation one to equation three if you choose

Answer 2

that leaves me with 4x+2y=16 and x+2y+2z=11 correct?

Answer 3

yea, now you can solve 4x+2y=16 for either x or y

Answer 4

y=-2x+8

Answer 5

x=3,y=2,z=2

Answer 6

2y=16-4x wouldn't turn into y=8-2x?

Answer 7

ha ha.. sorry, yea, ...it does.

Answer 8

oh woosh... I was worried I was way off base lol

Answer 9

thanks Ryan

Answer 10

why not thank me

Answer 11

and thank you love math ;)

Answer 12

you kind of snuck in here

Answer 13

you got it from here?