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o suma de doi termeni:54,35,42


Răspuns :

27+27=54 34+20=54 23+31=54 45+9=54 26+9=35 20+22=42 33+9=42 15+20=35 24+11=35
54 = 50 + 4
35 = 30 + 5
42 = 40 + 2