It depends on what you have in mind.
If you're thinking of just putting your content and creating links on Twitter as well as having a presence for your content on Pinterest and Tumblr, the answer is no.
Seriously, it's a flat no.
Social signals, in of themselves, are not going to improve your SEO rankings.
With that said, there is a correlation between how viral your content is or how popular your content is on social media and the backlinks that you get.
Make no mistake about it.
Backlinks is still the name of the game.
Usually, backlinks and social signals tend to track each other.
What I mean by this is the more social signals you get, the higher the likelihood that someone, somehow, someway is linking to your stuff.
So, they are coincidental but they do tend to move in the same direction.
With that said, simply creating all these links on social media platforms are not going to move the needle as far as your search ranking are concerned.