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.

x + y – 3z = –8
2x + 2y + z = 12
3x + y – z = –2
Answers

A)7x + 7y = 28
3x + y = –2

B.)7x + 7y = 28
5x + 3y = 10

c.) x + y = –8
3x + y = –2

D.) x + y = –8
5x + 3y = 14

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.

x + y – 3z = –8
2x + 2y + z = 12
3x + y – z = –2
Answers
    
A)7x + 7y = 28
3x + y = –2 
   
B.)7x + 7y = 28
5x + 3y = 10 
   
c.) x + y = –8
3x + y = –2 
   
D.) x + y = –8
5x + 3y = 14

anonymous · Answer

B

anonymous · Answer

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