Question

7x+y+4z=-5

3x−y+3z=4
4x+4y+2z=2
(x,y,z)=(
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Additional Materiale 0/1 Points] Find the solution of the follow
x−3y+z=3
3y−2z=−7
x+y+5z=7
(x,y,z)=(
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Answer 1

(x, y, z) = (-5, 2, 7)

Explanation:

7x + y + 4z = -5

3x − y + 3z = 4

4x + 4y + 2z = 2

7x + y + 4z = -5

3x − y + 3z = 4

2x + 2y + z = 1

R1 - 4R3

R2 - 3R3

-x - 7y = -9

-3x - 7y = 1

14y = 28

y = 2

-x - 14 = -9

x = -5

2(-5) + 2(2) + z = 1

z = 7

(x, y, z) = (-5, 2, 7)