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Unde se pun parantezele?
42:3+4+7+40×2=100


Răspuns :

42:(3+4)+(7+40)x2=100
42:7+47x2=100
6+94=100
100=100
42:(3+4)+(7+40)×2=100
42:7+47×2=100
6+94=100
100=100.....