Solve the system by substitution. 2x - y + z = -4 z = 5 -2x + 3y - z = -10

Question

asked Oct 4, 2017 82.5k views

2 Answers

Jason Kibble · Answer 1 · 2017-10-11T06:16:29+0000

Substituting z = 5 into the first equation:

2x - y + 5 = -4
y = 2x + 9

Substituting y and z into the third equation
-2x + 3(2x + 9) - 5 = -10
4x + 27 = -5

x = -8
y = 2(-8) + 9 = 7
z = 5

Solve the system by substitution. 2x - y + z = -4 z = 5 -2x + 3y - z = -10

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

Please log in or register to add a comment.

Please log in or register to add a comment.

No related questions found

Categories

Other Questions