diff --git a/book/basic-features/equations.md b/book/basic-features/equations.md
index 89c5a4e..e521872 100644
--- a/book/basic-features/equations.md
+++ b/book/basic-features/equations.md
@@ -17,7 +17,7 @@ $$
 ```{tip}
 The scientific rules dictate that quantities ($F$, $m$, $a$ etc.) should be printed in italics. Units, however, should not! One can use `\text{m}` in an equation to comply to this rule:
 
-$$ F = m \cdot a = 10 \cdot 9.81 = 98 \text{N}
+$$ F = m \cdot a = 10 \cdot 9.81 = 98 \text{N}$$
 ```
 
 > **Warning**