an trei saci sunt 340 kg faina,primii doi saci au ampreuna 248kg iar ultimii doi saci au 216 kg,câte kg de aur are fiecare sac
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Explicație pas cu pas:
a+b+c= 340
a+b= 248
b+c=216
248+ c= 340
c= 340-248
c = 92 kg
b+ 92= 216
b= 216-92
b= 124 kg
a+124=248
a=248-124
a = 124
124+ 124+ 92=340