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14 February, 15:33

Solve the system by substitution.

-x-y-z=-8

-4x+4y+5z=7

2x+2z=4

+3
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  1. 14 February, 19:10
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    1. x=-y+8-z 2. x=- 7-4y-5z (everything over 4) 3. x=2-z 1. y=-x+8-z 1. z=-x+4-y 2. y=7+4x-5x (everything over 4) 2. z=7+4x-4y (everything over 5) 3. z=2-x
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