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a fost răspuns

Stiind ca: a) x/y = 2/3 aflati 2x/2x+5y b) x/y = 4/5 aflati 3x+2y/2y c) x/y = 3/2 aflati 4x-5y/5y d) x/y = 2/11 aflati 5y/3x+5y e)x/y = 2/7 aflati 5x/ 3y-5x f) x/y = 1/3 aflati 2y-4x/4x