Ellos tienen siete años y cinco años.
Seeing as how they speak Spanish in Argentina: Yo tengo cinco años
if 'x' is a variable then you would say: X - 5 = old mans age.
5 in Spanish is "cinco". You cannot say "five" because that is an English word, not Spanish.
Spanish cyclist Daniel Moreno is 36 years old (birthdate: September 5, 1981).
Spanish tenor José Carreras is 71 years old (birthdate: December 5, 1946).
Spanish actress Ángela Molina is 62 years old (birthdate: October 5, 1955).
Spanish race driver Javier Villa is 30 years old (birthdate: October 5, 1987).
Spanish architect Ricardo Bofill Levi is 78 years old (birthdate December 5, 1939).
Spanish actress Aitana Sánchez-Gijón is 49 years old (birthdate: November 5, 1968).
I'm not sure what "35 years old in dog years old" means, exactly. If what you're trying to say is that the dog is 5 years old, then that's in the reproductive age for a dog. I hesitate to say it's "safe", since all kinds of things could go wrong, but it's certainly not unusual for a 5 year old dog to have puppies.
15
Jean-Baptiste Say was born on January 5, 1767 and died on November 15, 1832. Jean-Baptiste Say would have been 65 years old at the time of death or 248 years old today.