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Daaca 9x - 4y / 2x +3y = 2, atunci y/x este ...

Răspuns :

(9x-4y)/(2x+3y)=2; 9x-4y=2(2x+3y); 9x-4y=4x+6y; 9x=10y+4x; 5x=10y; 5/10=y/x; y/x=1/2