Simplify: (x + y + 2) + (y + z - x) + (z + x - y)
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Answer:
3x + y + 2z + 2
Step-by-step explanation:
(x + y + 2) + (y + z + x) + (z + x - y)
x + y + 2 + y + z + x + z + x - y
x + x + x = 3x
y + y - y = y
z + z = 2z
2 = 2
3x + y + 2z + 2
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