Simplify \(1\times 351\) to \(351\).
\[123+879-545+423-639=351\times 2\times 421241\times 4\times 281\times 5\times 21.1\]
Simplify \(351\times 2\) to \(702\).
\[123+879-545+423-639=702\times 421241\times 4\times 281\times 5\times 21.1\]
Simplify \(702\times 421241\) to \(295711182\).
\[123+879-545+423-639=295711182\times 4\times 281\times 5\times 21.1\]
Simplify \(295711182\times 4\) to \(1182844728\).
\[123+879-545+423-639=1182844728\times 281\times 5\times 21.1\]
Simplify \(1182844728\times 281\) to \(332379368568\).
\[123+879-545+423-639=332379368568\times 5\times 21.1\]
Simplify \(332379368568\times 5\) to \(1.661897\times {10}^{12}\).
\[123+879-545+423-639=1.661897\times {10}^{12}\times 21.1\]
Simplify \(1.661897\times {10}^{12}\times 21.1\) to \((35.066023)\times {10}^{12}\).
\[123+879-545+423-639=35.066023\times {10}^{12}\]
Simplify \(123+879\) to \(1002\).
\[1002-545+423-639=35.066023\times {10}^{12}\]
Simplify \(1002-545\) to \(457\).
\[457+423-639=35.066023\times {10}^{12}\]
Simplify \(457+423\) to \(880\).
\[880-639=35.066023\times {10}^{12}\]
Simplify \(880-639\) to \(241\).
\[241=35.066023\times {10}^{12}\]
Since \(241=35.066023\times {10}^{12}\) is false, there is no solution.
[No Solution]
