Question

A soma de dois números naturais consecutivos e 557. Quais são os números ?

Answer 1

$x+x+1=557\to \\\\ x+x=557-1\to \\\\ 2x=556\to \\\\ x= \frac{556}{2} \to \\\\ \boxed{x'=278}\\\\ x+1\to 278+1\to \boxed{x''=279}\\\\\\ Os~~nu\´meros~~s\~ao\ 278~~e~~279$