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 - 5y + 2z = 7
4x + 9y - z = 2
x - 3y + 3z = 7

A)11x + 13y = 11
13x + 24y = 13

B)11x + 13y = 11
3x - 5y = 7

C)x - 3y = 7
13x + 24y = 13

D)x - 3y = 7
3x - 5y = 7

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 - 5y + 2z = 7
4x + 9y - z = 2
x - 3y + 3z = 7
 	
A)11x + 13y = 11
13x + 24y = 13

B)11x + 13y = 11
3x - 5y = 7
	
C)x - 3y = 7
13x + 24y = 13
	
D)x - 3y = 7
3x - 5y = 7

nincompoop · Answer

make an attempt at solving your own problem

dumbcow · Answer

A

anonymous · Answer

@dumbcow Please try to not just give students the "answer" - rather, guide them to a "solution" by walking them through the problem. This allows them to learn, and figure out how to approach the concepts on their own!

anonymous · Answer

@dumbcow thank youuu