RU-ALLRUSSIAN 1991 Problem 1
- Answer
Find all integers a, b, c, d such that ab - 2cd = 3, ac + bd = 1.
Dataset text NuminaMath olympiads. Quoted with source.
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(\mathrm{a},\mathrm{b},\mathrm{c},\mathrm{d}) = (1,3,1,0),(-1, - 3, - 1,0), (3,1,0,1),(-3, - 1,0, - 1)
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