Răspunsuri

  • Utilizator Brainly
2014-03-04T17:17:36+02:00
20,5(2)=(2052-205)/90=1847/90; 10x=1847/9;
7y=11/9;
E=10x-7y+13=1847/9-77/9+13·9/9=1887/9=209,(6)
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