diff --git a/README.md b/README.md
index de9e046..4d9fb9f 100644
--- a/README.md
+++ b/README.md
@@ -771,7 +771,7 @@ Z = 4x_1 + 3x_2
 
 ### ➢ [**Subject to:**]():
 
-$
+$$
 \begin{cases}
 x_1 + 3x_2 \leq 7 \\
 2x_1 + 2x_2 \leq 8 \\
@@ -779,7 +779,7 @@ x_1 + x_2 \leq 3 \\
 x_2 \leq 2 \\
 x_1 \geq 0, \quad x_2 \geq 0
 \end{cases}
-$
+$$
 
 ```latex
 \begin{cases}