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Boss581
a fost răspuns

Afla numărul necunoscut:a+(980+796)=4000, (2901+6156)-b=5435, c-(10000-8903)=3679, (9980-7675)-d=980.

Răspuns :

Iamale47
a+(980+796)=4000
a+1776=4000
a=4000-1776
a=2224

(2901+6156)-b=5435
9036-b=5435
b=9036-5435
b=3601

c-(10000-8903)=3679
c-1097=3679
c=3679+1097
c=4776

(9980-7675)-d=980
2305-d=980
d=2305-980
c=1325

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