HELP MATH ASAP: Solve the following

Question

iwanttogotostanford · Answer

@imqwerty

welshfella · Answer

i suggest you add  2nd and 3rd equations
this will eliminate the y terms

welshfella · Answer

then multiply the 3rd equation by 3 and add it to the first equation
this will give you another equation in x and z

iwanttogotostanford · Answer

plz help

iwanttogotostanford · Answer

i think it is D but not sure

anonymous · Answer

|dw:1454880392873:dw|

iwanttogotostanford · Answer

thanks so much

anonymous · Answer

np

danjs · Answer

they gave choices. you can test and see the answer,

danjs · Answer

and say forget all that other work.. hah, but shouldnt

agent0smith · Answer

Or @DanJS you can post it on OpenStudy and have someone give you the answer, and do zero work yourself!

welshfella · Answer

yea!  thast the problem - so many just want the answer1

danjs · Answer

hah, yeah

aihberkhan · Answer

Lol thats what I would do if I really didn't feel like doing anything xDD

@DanJS

danjs · Answer

the exact same sort of question many times in a row is what gets me, i just stop helping , oh well

aihberkhan · Answer

Yeah. This is when the trick where you just have an answer ready for the same type of questions and just copy and paste it comes in handy xD

mathmale · Answer

I assume that several equations were presented up front.  What happened to them?