x+y+z=12 y=1 x-y-z=0

ordered triples
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1 Answer

since y = 1 then x + 1 + z = 12 or x + z = 11

and x - 1 - z = 0 or x - z = 1

you can now use elimination

x + z = 11

x - z = 1

add straight down

2x = 12 then divide by 2 so x = 6

since x + z = 11 and x = 6 then z = 5

final answer (6, 1, 5)
by Level 5 User (11.9k points)

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