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DAU COROANA AJUTOOOORRRRRR!




DAU COROANA AJUTOOOORRRRRR class=

Răspuns :

Răspuns:

2021 = 47×43

47+43=90

x = 47×90 = 4230

y = 43×90 = 3870

verificare:

1/x+1/y = 1/(47×90) + 1/(43×90) = (43+47)/(43×47×90) = 90/(43×47×90) = 1/(43×47) = 1/2021