diff --git a/HOME_EXAM.md b/HOME_EXAM.md
index 8233179893759478b5c90a78cbe04e4cec4f307c..bdd8b16bed5b5a3dc502c244c056185f8c4c36c7 100644
--- a/HOME_EXAM.md
+++ b/HOME_EXAM.md
@@ -157,7 +157,9 @@ Given a expression $e$ in the state $\sigma$  that evaluates to a value $n$ or b
 
 #### Arithmetic
 Addition:\
-$\frac{\lang e1, \sigma \rang \ \Downarrow \ n1 \; \lang e2, \sigma \rang \ \Downarrow \ n2}{\lang e1 + e2, \sigma \rang \ \Downarrow \ n1 + n2}$
+```math
+\frac{\lang e1, \sigma \rang \ \Downarrow \ n1 \; \lang e2, \sigma \rang \ \Downarrow \ n2}{\lang e1 + e2, \sigma \rang \ \Downarrow \ n1 + n2}
+```
 
 Subtraction:\
 $\frac{\lang e1, \sigma \rang \ \Downarrow \ n1 \; \lang e2, \sigma \rang \ \Downarrow \ n2}{\lang e1 - e2, \sigma \rang \ \Downarrow \ n1 - n2}$