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Cami0202
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♥Daca x/y=4/9, y≠0, atunci (3x+2y)/(5x+y)=...
♥Daca x/y=3/5, y≠0, atunci (4x+6y)/(x+y)=...
♥Daca x/4=y/7, atunci (9x-2y)/(x+3y)=...
♥Daca x/2=y/9, atunci (10x-2y)/(5x+y)=..

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