Question

SOLVING SYSTEMS OF EQUATIONS IN THREE VARIABLES
'''I will also give a medal'' Thanks


(1)

x+y+z=4
2x-y+z=3
-4x=2y-z=-1

(2)

x+y-2z=-10
-4x=-8
3x+y=4

Answer 1

Question 1 seems to have a problem with the 3rd equation. On question 2. Solve for x first in the equation -4x=-8. Once you have done this solve for y in the equation 3x+y=4 by plugging the x value in. Once you have x and y you can solve for z in the top equation by plugging in x and y.

Answer 2

Thanks!