Question

sa se determine 3 nr.naturale consecutive ,stiind ca suma lor este cu 77mai mare decat numarul cel mic

Answer 1

Notam:a-nr cel mic__________________ _______________________________________b-al II-lea nr_si b=a+1_________ _______________________________________c-al III-lea nr_si c=b+1=a+1+1=a+2__________________ ________________________________ _____a+b+c=77+a__________________ _____________________________________Inlocuim:a+(a+1)+(a+2)=77+a_____ ______________________________________a+a+1+a+2=77+a______________ _____3*a+3=77+a________________________3*a-a=77-3__________________ ______2*a=74___________________________a=74:2=37___________________ _______b=a+1=37+1=38____________ ________c=a+2=37+2=39