Question

Solve each system by elimination. 1) -x-5y-5z=2 4x-5y+4z=19 x+5y-z=-20 2) -4x-5y-z=18 -2x-5y-2z=12 -2x+5y+2z=4 3) -x-5y+z=17 -5x-5y+5z=5...

Solve each system by elimination.
1) -x-5y-5z=2
4x-5y+4z=19
x+5y-z=-20

2) -4x-5y-z=18
-2x-5y-2z=12
-2x+5y+2z=4

3) -x-5y+z=17
-5x-5y+5z=5
2x+5y-3z=-10

4) 4x+4y+z=24
2x-4y+z=0
5x-4y-5z=12

5) 4r-4s+4t=-4
4r+s-2t=5
-3r-3s-4t=-16

6) x-6y+4z=-12
x+y-4z=12
2x+2y+5z=-15
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