Solve using gaussian elimination and show ur work 2y + z = -8
x - 2y - 3z = 0
-x + y + 2z = 3

Add the last two equations to eliminate x :

(x - 2y - 3z) + (- x + y + 2z) = 0 + 3

- y - z = 3

y + z = -3

Subtract this from the first equation to eliminate z, then solve for y :

(2y + z) - (y + z) = -8 - (-3)

y = -5

Plug this into the first equation to solve for z :

2(-5) + z = -8

z = 2

Plug both of these into either the second or third equations to solve for x :

x - 2(-5) - 3(2) = 0

x = -4

there is no graph so i cant sorry

step-by-step explanation:

too many. (jk)

31 v bucks

step-by-step explanation:

since you bought 25 on friday and 6 on tuesday, you can just add them up.

25+6=31

check your work.

31-6=25

i hope this !

-yand3r3