diff --git a/lab-python-lambda-map-reduce-filter.ipynb b/lab-python-lambda-map-reduce-filter.ipynb
index 96c9781..ffd568a 100644
--- a/lab-python-lambda-map-reduce-filter.ipynb
+++ b/lab-python-lambda-map-reduce-filter.ipynb
@@ -66,7 +66,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "id": "08463071-9351-4d49-8d29-4fcb817fb177",
    "metadata": {},
    "outputs": [],
@@ -94,12 +94,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 12,
    "id": "0781335d-39cf-403d-b86a-ca908a09fe55",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Credits: [(2500, 'credit'), (850, 'credit'), (1500, 'credit'), (5000, 'credit'), (1000, 'credit')]\n",
+      "Debits: [(-1200, 'debit'), (-100, 'debit'), (-250, 'debit'), (-300, 'debit'), (-850, 'debit')]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "credits = list(filter(lambda x: x[1] == \"credit\", transactions))\n",
+    "debits = list(filter(lambda x: x[1] == \"debit\", transactions))\n",
+    "\n",
+    "print(\"Credits:\", credits)\n",
+    "print(\"Debits:\", debits)"
    ]
   },
   {
@@ -124,12 +138,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 16,
    "id": "25073469-7258-4fc6-b0a0-ef8ea57688fe",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Debits ordenados: [(-100, 'debit'), (-250, 'debit'), (-300, 'debit'), (-850, 'debit'), (-1200, 'debit')]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "debits = list(filter(lambda x: x[1] == \"debit\", transactions))\n",
+    "sort_descending = lambda a, b: -1 if a[0] > b [0] else 1\n",
+    "from functools import cmp_to_key\n",
+    "sorted_debits = sorted(debits, key=cmp_to_key(sort_descending))\n",
+    "print(\"Debits ordenados:\", sorted_debits)"
    ]
   },
   {
@@ -158,7 +185,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 17,
    "id": "e1de9d03-f029-4e2e-9733-ae92e3de7527",
    "metadata": {},
    "outputs": [],
@@ -169,12 +196,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 19,
    "id": "2f253b7e-5300-4819-b38f-9fc090554f51",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[105.0, 52.5, -26.25, 1050.0, -10.5]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here"
+    "# your code goes here\n",
+    "saldo_interes = list(map(lambda x: x * 1.05, balances))\n",
+    "print(saldo_interes)"
    ]
   },
   {
@@ -195,7 +232,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 21,
    "id": "69e24c3b-385e-44d6-a8ed-705a3f58e696",
    "metadata": {},
    "outputs": [],
@@ -209,12 +246,27 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "id": "0906a9b0-d567-4786-96f2-5755611b885e",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[{'balance': 1020.0, 'interest_rate': 0.02}, {'balance': 2020.0, 'interest_rate': 0.01}, {'balance': 515.0, 'interest_rate': 0.03}]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code goes here\n"
+    "# your code goes here\n",
+    "accounts_after_interest = list(map(\n",
+    "    lambda acc: {\"balance\": acc[\"balance\"] * (1 +  acc[\"interest_rate\"]),\n",
+    "                 \"interest_rate\": acc[\"interest_rate\"]},\n",
+    "    accounts\n",
+    "))\n",
+    "\n",
+    "print(accounts_after_interest)"
    ]
   },
   {
@@ -243,14 +295,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 24,
    "id": "6284dbd3-e117-411e-8087-352be6deaed4",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[-26.25, -10.5]\n",
+      "-36.75\n"
+     ]
+    }
+   ],
    "source": [
     "from functools import reduce\n",
     "\n",
-    "# your code goes here"
+    "# your code goes here\n",
+    "balances = [105.0, 52.5, -26.25, 1050.0, -10.5]\n",
+    "negative = list(filter(lambda x: x < 0, balances))\n",
+    "print(negative)\n",
+    "\n",
+    "total_negative = reduce(lambda x, y: x + y, negative)\n",
+    "print(total_negative)"
    ]
   },
   {
@@ -273,24 +340,38 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 25,
    "id": "da2264b5-298e-4b45-99df-852b94e90d15",
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[650, 1600, 275]\n"
+     ]
+    }
+   ],
    "source": [
     "accounts = [\n",
     "    {'balance': 1000, 'withdrawals': [100, 50, 200]},\n",
     "    {'balance': 2000, 'withdrawals': [300, 100]},\n",
     "    {'balance': 500, 'withdrawals': [50, 100, 75]},\n",
     "]\n",
+    "# your code goes here\n",
+    "def calculate_balance(account):\n",
+    "    total_withdrawals = sum(account[\"withdrawals\"])\n",
+    "    remaining_balance = account[\"balance\"] - total_withdrawals\n",
+    "    return remaining_balance\n",
     "\n",
-    "# your code goes here\n"
+    "remaining_balances = list(map(calculate_balance, accounts))\n",
+    "print(remaining_balances)"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -304,7 +385,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.9"
   }
  },
  "nbformat": 4,