diff --git a/analysis-master/analysis/equation.ipynb b/analysis-master/analysis/equation.ipynb
index d43817b7..0d8ef4ea 100644
--- a/analysis-master/analysis/equation.ipynb
+++ b/analysis-master/analysis/equation.ipynb
@@ -136,101 +136,6 @@
     "string = \"8^32*4/-2+0.8\"\n",
     "evaluate(string)"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 23,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "from sympy import symbols, solve"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 26,
-   "metadata": {},
-   "outputs": [
-    {
-     "output_type": "execute_result",
-     "data": {
-      "text/plain": "[6]"
-     },
-     "metadata": {},
-     "execution_count": 26
-    }
-   ],
-   "source": [
-    "x = symbols(\"x\")\n",
-    "expr = x-4-2\n",
-    "sol = solve(expr)\n",
-    "sol"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 27,
-   "metadata": {},
-   "outputs": [
-    {
-     "output_type": "stream",
-     "name": "stdout",
-     "text": "x - 6\n"
-    }
-   ],
-   "source": [
-    "print(expr)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 28,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "expr = \"x-4-2\""
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 29,
-   "metadata": {},
-   "outputs": [
-    {
-     "output_type": "execute_result",
-     "data": {
-      "text/plain": "[6]"
-     },
-     "metadata": {},
-     "execution_count": 29
-    }
-   ],
-   "source": [
-    "sol = solve(expr)\n",
-    "sol"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 30,
-   "metadata": {},
-   "outputs": [
-    {
-     "output_type": "stream",
-     "name": "stdout",
-     "text": "x-4-2\n"
-    }
-   ],
-   "source": [
-    "print(expr)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {