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S:P20.36. Determinati numărul natural a pentru care
{[(a+2): 2017 +2017) : 2018+2018) : 2019+2019 = 2020.​


Răspuns :

Răspuns:

{[(a+2):2017+2017]:2018+2018}:2019+2019=2020

{[(a+2):2017+2017]:2018+2018}:2019=1

[(a+2):2017+2017]:2018+2018=2019

[(a+2):2017+2017]:2018=1

(a+2):2017+2017=2018

(a+2):2017=1

a+2=2017

a=2015

Sper că te-am ajutat!