LocaChica16
New member
- Joined
- Sep 8, 2005
- Messages
- 9
Hey guys, if you could help me with this I'd appreciate it.
Basically, the problem I was given was;
2x-y=2
3z=21
4x+z=19
And I'm supposed to solve for each variable.. which I did, and I got z=7, x=-3, and y=-8... which all plug in and work correctly except for in the last equation, if I change x to positive 3 then the last equation works, but the first two don't. I'm so confused, so if anyone can show me what I'm doin wrong I'd love it! Thank you.
Basically, the problem I was given was;
2x-y=2
3z=21
4x+z=19
And I'm supposed to solve for each variable.. which I did, and I got z=7, x=-3, and y=-8... which all plug in and work correctly except for in the last equation, if I change x to positive 3 then the last equation works, but the first two don't. I'm so confused, so if anyone can show me what I'm doin wrong I'd love it! Thank you.