How do you say I lived for 45 years in French?

There are a couple of ways to say "I lived for 45 years" in French, depending on the context:

For a general statement:

* J'ai vécu pendant 45 ans. (This is the most straightforward translation.)

If you're specifically talking about living in a certain place:

* J'ai vécu 45 ans ici. (I lived 45 years here.)

* J'ai habité 45 ans à [place name]. (I lived 45 years in [place name].)

To emphasize the duration:

* J'ai passé 45 ans de ma vie [à faire quelque chose]. (I spent 45 years of my life [doing something].)

To emphasize the past:

* J'ai vécu 45 ans, et maintenant...? (I lived for 45 years, and now...?)

Choose the translation that best suits the context of your conversation.