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Ce valori (x,y) fac adevata relatia: (x+5)x(y-4)=3x3x2x2:1 ?

Răspuns :

(x+5)×(y-4)=36 = X×Y- 20= 36

                         = X×Y= 16

x=1,2,4,16

y=16,4,2,1