Question

Solve this system of equations:

x + 4y + z = –10
3x – 3y + 6z = –21
x + 2y + 2z = –10

Answer 1

What method can you use?

Answer 2

any method, preferably elimination.

Answer 3

kinda the same as matrices.

Answer 4

so all the columns have the same terms

first has x second has y third has z and last has numbers

Answer 5

i haven't gotten to that lesson yet so i really dont know about matrices yet

Answer 6

(1, –2, –3)

(–4, –1, –2)

(–3, –2, –3)

(2, –2, –4)

those are the answer choices

Answer 7

I'll come back if no one else can help.