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just olya [345]
3 years ago
11

2x + 3y- z = 13 3x - 4y+z = -2 x + 2y + 2z= 21

Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0
What’s the question ?
11111nata11111 [884]3 years ago
8 0

Answer:

17

Step-by-step explanation:

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