diff --git a/task7_1.py b/task7_1.py
new file mode 100644
index 0000000..e70c5d1
--- /dev/null
+++ b/task7_1.py
@@ -0,0 +1,35 @@
+def list_sum(l_1, l_2):
+    return [x + y for x, y in zip(l_1, l_2)]
+
+
+class Matrix:
+    def __init__(self, matrix):
+        self.matrix = matrix
+
+    def __str__(self):
+        res = ''
+        for x in self.matrix:
+            for y in x:
+                res += f"{y : ^10}"
+            res += '\n'
+        return res
+
+    def __add__(self, other):
+        res = []
+        try:
+            for i, x in enumerate(self.matrix):
+                res.append(list_sum(x, other.matrix[i]))
+        except IndexError:
+            return Matrix(res)
+        return Matrix(res)
+
+
+m_1 = Matrix([[31, 22, 2], [54, 6, 9], [8, 5, -1]])
+m_2 = Matrix([[11, 5, -1], [4, 26, 4], [-4, 66, 45], [1, 4, 5]])
+print(m_1)
+print("-" * 30)
+print(m_2)
+print("-" * 30)
+print("Сумма матриц:")
+print(m_1 + m_2)
+
diff --git a/task7_2.py b/task7_2.py
new file mode 100644
index 0000000..39cbe84
--- /dev/null
+++ b/task7_2.py
@@ -0,0 +1,38 @@
+from abc import ABC, abstractmethod
+
+
+class Clothes(ABC):
+    def __init__(self, size):
+        self.size = size
+
+    @property
+    @abstractmethod
+    def tissue_consumption(self):
+        pass
+
+    def __add__(self, other):
+        return self.tissue_consumption + other.tissue_consumption
+
+
+class Coat(Clothes):
+
+    @property
+    def tissue_consumption(self):
+        return round((self.size / 6.5) + 0.5)
+
+
+class Jacket(Clothes):
+
+    @property
+    def tissue_consumption(self):
+        return round((self.size * 2) + 0.3) / 100
+
+
+cloth = Clothes
+coat = Coat(8)
+print(f"{coat.tissue_consumption}м ткани")
+print("-" * 30)
+jacket = Jacket(165)
+print(f"{jacket.tissue_consumption}м ткани")
+print("-" * 30)
+print(f"{coat + jacket}м ткани")
diff --git a/task7_3.py b/task7_3.py
new file mode 100644
index 0000000..22d98bd
--- /dev/null
+++ b/task7_3.py
@@ -0,0 +1,52 @@
+from random import randint
+
+
+def get_random_char():
+    return chr(randint(33, 44))
+
+
+class Cell:
+    def __init__(self, cells):
+        self.cells = cells
+
+    def __str__(self):
+        return f"Я клетка! Во мне {self.cells} ячеек"
+
+    def __add__(self, other):
+        return self.cells + other.cells
+
+    def __sub__(self, other):
+        if self.cells - other.cells < 0:
+            print(f"Разница не может быть отрицательна!")
+            return 0
+        else:
+            return self.cells - other.cells
+
+    def __mul__(self, other):
+        return self.cells * other.cells
+
+    def __truediv__(self, other):
+        return self.cells // other.cells
+
+    def make_order(self, num):
+        sym = get_random_char()
+        return '\n'.join([sym * num for x in range(0, self.cells // num)]) \
+               + f"\n{sym * (self.cells % num)}"
+
+
+cell_1 = Cell(18)
+cell_2 = Cell(34)
+print(cell_1)
+print(cell_2)
+print()
+print(cell_1.make_order(5))
+print()
+print(cell_1.make_order(8))
+print()
+print(cell_2.make_order(9))
+print()
+print(cell_1 + cell_2)
+print(cell_1 - cell_2)
+print(cell_2 - cell_1)
+print(cell_2 / cell_1)
+print(cell_2 * cell_1)