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media aritmetica a doua nr naturale consecutive pare este 59. Aflati numerele.

Răspuns :

a=primul numar
a+1=al doilea numar

[tex] M_{a} [/tex] = [tex] \frac{a+ (a+1)}{2} [/tex] => a+(a+1)=M_{a} · 2=59 ·2= 118.

a+(a+1)=118
2a+1=118
2a=118-1
2a=117
a=117
a=58,5



Ma=( a+b):2=59
Ma=59*2
Ma=118
verificare : (59+59 ):2=59 ⇒118:2=59