What is the solution to the system of equations?
1) 3x+2y+z=7
2)5x+5y+4z=3
3)3x+2y+3z=1

Question

What is the solution to the system of equations?
1) 3x+2y+z=7
2)5x+5y+4z=3
3)3x+2y+3z=1

austinl · Answer

Is there a particular method that we are supposed to use?

anonymous · Answer

Substitution ? Right?

austinl · Answer

We can use substitution, elimination, or Kramer's Rule

anonymous · Answer

Well I would rather use substitution, cause its easier for me

austinl · Answer

Ok, so for this one.... hmm....

Ok, in line 1, you can get z by itself. 
Then pick another line to get z alone.

anonymous · Answer

z=-2y-3x+7 ???

austinl · Answer

Correct, now let's get z by itself in line 3.

austinl · Answer

Honestly, elimination would be much easier for this problem... but we can solve it through substitution, kinda.

austinl · Answer

What do you get for the last line?

anonymous · Answer

I answered it using elimination... O_O I kinda just figured it out. But thanks for your help!

ttp · Answer