Răspuns :
10-3/4*10-1/5*10=10-30/4-5/10=400/40-300/40-20/400=80/400=1/50=0,02 kg
10-3/4*10-1/5*10=10-30/4-5/10=400/40-300/40-20/400=80/400=1/50=0,02 kg sper ca te am ajutat