If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the second equation.
3x - 5y + z = 12
x + 6y - z = -4
2x - 5y - 2z = -8 (4 points)
Answer

4x + y = 8
-17y = 0

2x - 11y = 16
4x + 7y = -16

-23y + 4z = 24
-17y = 0

13y - 2z = 24
7y - 4z = 0

Question

If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the second equation.
3x - 5y + z = 12
x + 6y - z = -4
2x - 5y - 2z = -8 (4 points)
Answer
		
4x + y = 8
-17y = 0
		
2x - 11y = 16
4x + 7y = -16
		
-23y + 4z = 24
-17y = 0
		
13y - 2z = 24
7y - 4z = 0

anonymous · Answer

First, lets solve the second equation for x. What do you get for that?

anonymous · Answer

what do you mean slove for x i honestly dont have any idea how to do this problem :/

anonymous · Answer

I'm going to walk you through it. Solve for x means get x by itself on one side of the equal sign. 

For example, if I were to solve x + 10 + 2x = 0 for x, I would get 3x = -10 then x = -10/3. 

That being said, the second equation is x + 6y - z = -4. Solve it for x.

anonymous · Answer

good teaching eashmore.