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daca x/y =4/7 atunci 2x-y/x+y​

Daca Xy 47 Atunci 2xyxy class=

Răspuns :

Răspuns:

x=4y/7

2x-y/x+y=2*4y/7-y/4y/7+y

8y-7y/7/4y+7y/7

y/7/11y/7=y/7*7/11y=1/11