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-rw-r--r--lib/pure/rationals.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/pure/rationals.nim b/lib/pure/rationals.nim
index 72c64befc..6fd05dc4b 100644
--- a/lib/pure/rationals.nim
+++ b/lib/pure/rationals.nim
@@ -164,7 +164,7 @@ proc `-` *[T](x: Rational[T], y: T): Rational[T] =
 
 proc `-` *[T](x: T, y: Rational[T]): Rational[T] =
   ## Subtract rational `y` from int `x`.
-  result.num = - x * y.den + y.num
+  result.num = x * y.den - y.num
   result.den = y.den
 
 proc `-=` *[T](x: var Rational[T], y: Rational[T]) =