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Darius20001
a fost răspuns

Afla numarul necunoscut:2030+x-13521=8213

Răspuns :

Bobo2313
2030+x-13521=8213
2030+x=8213+13521
2030+x=21734
x=21734-2030
x=19704
Gacanoga
2030+x-13521=8213
x=8213+13521-2030
x=21734
8213+13521-2030=21734