Răspuns :
2t cartofi+3t ceapa=8100 lei
2t cartofi+7t ceapa=14900 lei
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4t ceapa=6800
ceapa=6800:4=1700 lei o tona de ceapa
2 cartofi+3x1700=8100
2c+5100=8100
2c=8100-5100
2c=3000
cartofi=1500 lei o tona de cartofi
2t cartofi+7t ceapa=14900 lei
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4t ceapa=6800
ceapa=6800:4=1700 lei o tona de ceapa
2 cartofi+3x1700=8100
2c+5100=8100
2c=8100-5100
2c=3000
cartofi=1500 lei o tona de cartofi
2x+3y=8100
2x+7y=14900/x(-1)
2x+3y=8100
-2x-7y= - 14900
0-4y= - 6800
4y=6800
Y=1700( 1 tona ceapa)
2x+3x1700=8100
2x=8100-5100
X=3000:2
X=1500(1 t cartofi)
2x+7y=14900/x(-1)
2x+3y=8100
-2x-7y= - 14900
0-4y= - 6800
4y=6800
Y=1700( 1 tona ceapa)
2x+3x1700=8100
2x=8100-5100
X=3000:2
X=1500(1 t cartofi)