Răspuns :
x+x+y=x => 4x+3x+12y=12x => 7x+12y=12x => 12y=5x => y=5x
3 4 12
Cum 70<x<80 , y apartine lui N=> x=72 =>y=(72x5):12=360:12=30
x=numarul pasarilor
y=numarul gastelor
3 4 12
Cum 70<x<80 , y apartine lui N=> x=72 =>y=(72x5):12=360:12=30
x=numarul pasarilor
y=numarul gastelor