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a b c 57 b a 6 d 3 4a d b c

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{a+b+c=57 {b-a=6 {d=3/4a {d+b =c

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Answer to a math question {a+b+c=57 {b-a=6 {d=3/4a {d+b =c

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a=12, b=18, c=27, d=9.

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