Tìm $a, b$ biết : 

$\frac{11}{17}<\frac{a}{b}<\frac{23}{29}$ và $8b-9a=31$

$\frac{11}{17}<\frac{a}{b}<\frac{23}{29}và8b-9a=3
đề thiếu dữ kiện hay sao ý bạn ạ :D!!! –  ๖ۣۜLazer๖ۣۜD♥๖ۣۜGin 04-04-16 10:41 PM

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