SOLUTION: Solve the system by substitution.
-x-y-z=-8
-4x+4y+5z=7
2x+2z=4
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Question 930708: Solve the system by substitution.
-x-y-z=-8
-4x+4y+5z=7
2x+2z=4
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
4(-x-y-z=-8)
-4x+4y+5z=7
-8x + z = -25
.........
2x + 2z = 4, z =
..........
-8x + z = -25
-8x + (2-x) = -25
-9x= -27
x = 3, z = -1 and y = 6
.........
(3, 6, -1) the solution for this System
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