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Stiind ca a+b=3054 calculeaza:236+a+586+b-2999.multumesc

Răspuns :

:236+a+586+b-2999=:236+a+b+586-2999
:236+586-2999+3054
=877
a+b=3054

236+a+586+b-2999= 822+3054-2999= 822+55= 877