Question

What is the solution of the system? Use substitution.

x = –2y + 10
–6y = 6x – 6
z = –3x + 10y
A. x = 9, y = –8, z = 114
B. x = –8, y = 9, z = 114
C. x = –8, y = 114, z = 9
D. x = 114, y = 9, z = –8

Answer 1

Substitute and check.

Answer 2

You have the options, it shouldn't be a problem.

Answer 3

im not good at algebra

Answer 4

Neither am I, but we cal always show some effort :)

Answer 5

can*

Answer 6

i tried and i cant get it

Answer 7

what have to tried so far?

Answer 8

sustituteing the numbers and i cant figure it out

Answer 9

Hm okay where are you stuck?

Answer 10

all of it is confusing

Answer 11

Unless you do it yourself, it won't get any clearer...
Assume A. is correct, and see if these values fit the equations.