If you were to use the elimination method to solve the following system, choose the new system of equations that would result after the variable z is eliminated in the first and second equations, then the second and third equations.

3x - 7y - z = -14
3x + 3y + 2z = 1
2x + 5y - 2z = -16

a. 3x - 7y = -14
2x + 5y = -16

b. 9x - 11y = -27
5x + 8y = -15

c. 9x - 11y = -27
3x - 7y = -14

d. 2x + 5y = -16
5x + 8y = -15

Question

If you were to use the elimination method to solve the following system, choose the new system of equations that would result after the variable z is eliminated in the first and second equations, then the second and third equations.

3x - 7y - z = -14
3x + 3y + 2z = 1
2x + 5y - 2z = -16

a. 3x - 7y = -14
2x + 5y = -16
	
b. 9x - 11y = -27
5x + 8y = -15

c. 9x - 11y = -27
3x - 7y = -14

d. 2x + 5y = -16
5x + 8y = -15

anonymous · Answer

B yet again
6x - 14y -2 z = -28
 3x + 3y + 2z = 1 


3x + 3y + 2z = 1 
2x + 5y - 2z = -16 

9x-11y=-27
5x+8y=-15
B B B

anonymous · Answer

Oh, crap. Sorry -- I asked the wrong one >> Ugh.

anonymous · Answer

Then my friend what is the right one? It is often said that we have to ask the wrong questions to get the right answers.