Solve. x + y + z = 7 x - y + 2z = 75x + y + z = 11
A. (1, 2, 4)
B. (4, 1, 2)
C. (4, 2, 1)
D. (1, 4, 2)
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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A. Equivalent equations B. Equivalent expressions
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A. 6533 B. 5467 C. 6577 D. 7577
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Factor when possible. If the polynomial is prime, say so.x2 + 7xy + 12y2
A. (x - 4y)(x + y) B. (x + 4y)(x + 3y) C. (x - 4y)(x + 3y) D. prime
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