diff --git a/mathgenerator/algebra.py b/mathgenerator/algebra.py
index c6f299a..ed56d5a 100644
--- a/mathgenerator/algebra.py
+++ b/mathgenerator/algebra.py
@@ -158,7 +158,8 @@ def distance_two_points(max_val_xy=20, min_val_xy=-20):
     | --- | --- |
     | Find the distance between $(-19, -6)$ and $(15, -16)$ | $\sqrt{1256}$ |
     """
-    if max_val_xy < min_val_xy: max_val_xy, min_val_xy = min_val_xy, max_val_xy
+    if max_val_xy < min_val_xy:
+        max_val_xy, min_val_xy = min_val_xy, max_val_xy
 
     point1X = random.randint(min_val_xy, max_val_xy + 1)
     point1Y = random.randint(min_val_xy, max_val_xy + 1)
@@ -503,9 +504,7 @@ def line_equation_from_2_points(max_val=20):
     y2 = random.randint(-max_val, max_val)
     m1 = (y2 - y1) // math.gcd(y2 - y1, x2 - x1)
     m2 = (x2 - x1) // math.gcd(y2 - y1, x2 - x1)
-    c1 = (y1 * (x2 - x1) -
-          (y2 - y1) * x1) // math.gcd(y1 * (x2 - x1) - (y2 - y1) * x1,
-                                      (x2 - x1))
+    c1 = (y1 * (x2 - x1) - (y2 - y1) * x1) // math.gcd(y1 * (x2 - x1) - (y2 - y1) * x1, (x2 - x1))
     c2 = (x2 - x1) // math.gcd(y1 * (x2 - x1) - (y2 - y1) * x1, (x2 - x1))
     c = rf"{'+' if c1 >= 0 else '-'}\frac{{{abs(c1)}}}{{{c2}}}" if c1 != 0 else ""
     if c2 < 0:
diff --git a/mathgenerator/computer_science.py b/mathgenerator/computer_science.py
index b772511..c3a3898 100644
--- a/mathgenerator/computer_science.py
+++ b/mathgenerator/computer_science.py
@@ -261,9 +261,7 @@ def createTribSeries(i):
         tribSeries = []
         for idx in range(i):
             if idx not in tribDict:
-                tribDict[idx] = tribDict[idx -
-                                         1] + tribDict[idx -
-                                                       2] + tribDict[idx - 3]
+                tribDict[idx] = tribDict[idx - 1] + tribDict[idx - 2] + tribDict[idx - 3]
             tribSeries.append(tribDict[idx])
         return tribSeries
 
diff --git a/mathgenerator/misc.py b/mathgenerator/misc.py
index d0e1e33..80b6b13 100644
--- a/mathgenerator/misc.py
+++ b/mathgenerator/misc.py
@@ -220,8 +220,7 @@ def decimal_to_roman_numerals(max_decimal=4000):
         elif last_value == 4:
             solution += (roman_dict[div] + roman_dict[div * 5])
         elif 5 <= last_value <= 8:
-            solution += (roman_dict[div * 5] + (roman_dict[div] *
-                                                (last_value - 5)))
+            solution += (roman_dict[div * 5] + (roman_dict[div] * (last_value - 5)))
         elif last_value == 9:
             solution += (roman_dict[div] + roman_dict[div * 10])
         x = math.floor(x % div)