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AflaAfla numărul ,,a,, din expresia:a+10+11+12+...=372 V


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Răspuns :

a+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25++26+27+28=372
a+361=372
a=372-361
a=11
Proba
11+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28=372
372=372