From 65cb25cdfd99dbf52fd4941a47e0d853bd63c56c Mon Sep 17 00:00:00 2001
From: laentropia <aadrian887mh@gmail.com>
Date: Mon, 27 Apr 2026 17:34:41 -0600
Subject: [PATCH] addition: reduce, gcd and correct_sign

---
 src/lib.rs | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 140eba1..fecfa75 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -54,15 +54,27 @@ impl Fraction {
     }
 
     fn gcd(a: i64, b: i64) -> i64 {
-        todo!();
+        if a == 0 {
+            return b;
+        }
+        Fraction::gcd(b % a, a)
     }
 
     fn reduce(&mut self) {
-        todo!();
+        let gdc = Fraction::gcd(self.num, self.den);
+
+        self.num /= gdc;
+        self.den /= gdc;
     }
 
     fn correct_sign(&mut self) {
-        todo!()
+        if self.num < 0 && self.den < 0 {
+            self.num = self.num.abs();
+            self.den = self.den.abs();
+        } else if self.den < 0 {
+            self.num = -self.num;
+            self.den = self.den.abs();
+        }
     }
 }