Which of the following is the solution of the given system of equations?

2x + 2y + z = - 12

x + z = 20

x = 1

A) (1, - 33/2, 19)

B) (1, 33/2, 19)

C) (1, - 17, 19)

D) (1, - 25, 21)

Question

Cristal Gonzales

Mathematics

27 November, 18:41

Which of the following is the solution of the given system of equations?

2x + 2y + z = - 12

x + z = 20

x = 1

A) (1, - 33/2, 19)

B) (1, 33/2, 19)

C) (1, - 17, 19)

D) (1, - 25, 21)

+2

Answers (1)

Know the Answer?

Gianni Valdez · Answer 1

The answer is A We have. x=1, then we substitute that on x+z = 20, to solve for z. 1+z=20 z=20-1 z=19 Then we substitute both values x=1 and z=19 on the other equation. 2x + 2y + z = - 12 2*1 + 2y + 19 = - 12 2y = - 12 - 19-2 2y = - 33 y=-33/2

Which of the following is the solution of the given system of equations?2x + 2y + z = - 12x + z = 20x = 1A) (1, - 33/2, 19)B) (1, 33/2, 19)C) (1, - 17, 19)D) (1, - 25, 21)

Which of the following is the solution of the given system of equations?

2x + 2y + z = - 12

x + z = 20

x = 1

A) (1, - 33/2, 19)

B) (1, 33/2, 19)

C) (1, - 17, 19)

D) (1, - 25, 21)