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Calculeaza 13x4:a=52

Răspuns :

Jolly7
13x4:a=52
52:a=52
a=52:52
a=1
Sper ca te-am ajutat! 
13x4:a=52
a=13x4
a=52:52
a=1
verificare
13x4:1=52:1=52