diff --git a/问题/均贫富.md b/问题/均贫富.md
index 385f366..10397fe 100644
--- a/问题/均贫富.md
+++ b/问题/均贫富.md
@@ -17,4 +17,10 @@ $ \begin{aligned} 2x &= a - b  &(移项并交换等式两侧) \newline x &=\frac
 
 $$ x = \frac{a+b}{2} - b $$
 
-\(x = \frac{a+b}{2} - b \)
+$ x = \frac{a+b}{2} - b $
+
+```math
+x = \frac{a+b}{2} - b
+```
+
+