Question

Solve the following system of equations....?

2x + 4y – 3z = –7
3x + y + 4z = –12
x + 3y + 4z = 4

Answer 1

are u familiar with cramers rule ?

Answer 2

You need to multiply or divide two of the equations so that when you add the equations together, you can eliminate one of the variables

Answer 3

oh, follow @psi9epsilon ... sounds like a good start :)

Answer 4

No, this is one of the sections I have the most trouble with.

Answer 5

well before we solve this just want to know if you are aware about determinants , if so cramers rule is a great method

Answer 6

I am not familiar with that. Sorry :(

Answer 7

I saw this same problem type given in an Algebra II class yesterday, way ahead of doing much with matrices... seems like they get introduced to the systems of equations early, then come back later with the better "tools" to work them :)

Answer 8

okie lets do it the other way,

Answer 9

http://en.wikipedia.org/wiki/Cramer's_rule, just in case you need to do it by cramers rule

Answer 10

THank you. I thnk i understand it more now. THanks. GTG :)

Answer 11

step 1: subtract second equation from 3rd
name the resultant equation as equation 4
step 2: multiply equation 1 by 4 and equatin 3 by 3,
then add them
name the resultant equatin as equation 5
step 3
solve equations 4 and 5 , i.e. either eliminate x or y, and you will obtain one value