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Nady [450]
2 years ago
10

5x-5y+4z=15 3x+5y-6z=7 -x+5y-5z=20

Mathematics
1 answer:
Kazeer [188]2 years ago
6 0

Answer:

Step-by-step explanation:

7x+5y-8z=42

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Step-by-step explanation:

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