Question

Solve the following system of equations.

2x - 3y + z = -7
3x + y - 2z = 13
x - 2y + 3z = -10

(-2, 1, 0)
(–2, 3, 2)
(2, 9, 2)
(2, 3, -2)

Answer 1

I got D. Just need to check. :)

Answer 2

@tkhunny @Whitemonsterbunny17 @aum @zzr0ck3r @mathstudent55 @dumbcow anyone? :)

Answer 3

To check if your answer is correct, plug the answer into the original equations and see if they are valid.

Answer 4

ok :)

Answer 5

idk I got something different

Answer 6

Your solution: x = 2, y = 3, z = -2
2x - 3y + z = -7
2(2) - 3(3) - 2
4 - 9 - 2
-7 so this is true.

Check the same way with the other two equations.

Answer 7

I think i got the same thing.

Answer 8

can you check the other two also?

Answer 9

3x + y - 2z = 13
3(2) + 3 - 2(-2)
6 + 3 + 4
13 (true)

Answer 10

x - 2y + 3z = -10
2 - 2(3) + 3(-2)
2 - 6 - 6
-10 (true)

Answer 11

thank you so much!

Answer 12

you are welcome.