diff --git a/content/functions/math.md b/content/functions/math.md
index 6375ad738..9a53473ec 100644
--- a/content/functions/math.md
+++ b/content/functions/math.md
@@ -31,35 +31,3 @@ There are 6 basic mathematical operators that can be used in Hugo templates:
| `mul` | Multiplies two integers. | `{{mul 2 3}}` → 6 |
| `sub` | Subtracts two integers. | `{{sub 3 2}}` → 1 |
-## Use `add` with Strings
-
-You can also use the `add` function with strings. You may like this functionality in many use cases, including creating new variables by combining page- or site-level variables with other strings.
-
-For example, social media sharing with [Twitter Cards][cards] requires the following `meta` link in your site's `` to display Twitter's ["Summary Card with Large Image"][twtsummary]:
-
-```
-
-```
-
-Let's assume you have an `image` field in the front matter of each of your content files:
-
-```
----
-title: My Post
-image: my-post-image.jpg
----
-```
-
-You can then concatenate the `image` value (string) with the path to your `images` directory in `static` and leverage a URL-related templating function for increased flexibility:
-
-{{< code file="partials/head/twitter-card.html" >}}
-{{$socialimage := add "images/" .Params.image}}
-
-{{< /code >}}
-
-{{% note %}}
-The `add` example above makes use of the [`absURL` function](/functions/absurl/). `absURL` and its relative companion `relURL` is the recommended way to construct URLs in Hugo.
-{{% /note %}}
-
-[cards]: https://dev.twitter.com/cards/overview
-[twtsummary]: https://dev.twitter.com/cards/types/summary-large-image
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