Systems of three equations

Question 1

Solve: x + y + z = −1, x − y + 2z = −11, 2x + y − z = 7. What is z?

Answer 

Question 2

Solve: x + y + z = 8, x − y + 2z = 7, 2x + y − z = −2. What is x?

Answer 

Question 3

Solve: x + y + z = 1, x − y + 2z = −10, 2x + y − z = 7. What is x?

Answer 

Question 4

Solve: x + y + z = 3, x − y + 2z = 12, 2x + y − z = −7. What is z?

Answer 

Question 5

Solve: x + y + z = 14, x − y + 2z = 4, 2x + y − z = 16. What is y?

Answer 

Question 6

Solve: x + y + z = 4, x − y + 2z = 0, 2x + y − z = −8. What is y?

Answer 

Question 7

Solve: x + y + z = 4, x − y + 2z = 17, 2x + y − z = −3. What is z?

Answer 

Question 8

Solve: x + y + z = 8, x − y + 2z = 18, 2x + y − z = 0. What is z?

Answer 

Question 9

Solve: x + y + z = 1, x − y + 2z = −11, 2x + y − z = 3. What is y?

Answer 

Question 10

Solve: x + y + z = 5, x − y + 2z = 13, 2x + y − z = 7. What is x?

Answer 

Question 11

Solve: x + y + z = 13, x − y + 2z = 5, 2x + y − z = 15. What is z?

Answer 

Question 12

Solve: x + y + z = 5, x − y + 2z = −2, 2x + y − z = 10. What is z?

Answer 

Question 13

Solve: x + y + z = 8, x − y + 2z = 6, 2x + y − z = 8. What is z?

Answer 

Question 14

Solve: x + y + z = 3, x − y + 2z = 10, 2x + y − z = −8. What is z?

Answer 

Question 15

Solve: x + y + z = 6, x − y + 2z = 1, 2x + y − z = 13. What is z?

Answer 

Question 16

Solve: x + y + z = 4, x − y + 2z = −9, 2x + y − z = 5. What is y?

Answer