document.write( "Question 173474: Solve for Matrix X:
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Algebra.Com's Answer #129115 by Edwin McCravy(20086)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"%28matrix%282%2C2%2C-3%2C-14%2C2%2C9%29%29X=%28matrix%282%2C2%2C8%2C-4%2C0%2C-4%29%29\"\r\n" );
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document.write( "First find the inverse of \"%28matrix%282%2C2%2C-3%2C-14%2C2%2C9%29%29\" by\r\n" );
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document.write( "1. find the determinant \r\n" );
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document.write( "2. Swap the elements is the upper left to lower right diagonal.\r\n" );
document.write( "   Change the signs in the other diagonal.\r\n" );
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document.write( "\"%28matrix%282%2C2%2C-9%2C14%2C2%2C3%29%29\"\r\n" );
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document.write( "3. Divide the matrix through by the determinant\r\n" );
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document.write( "That is the inverse matrix. So left-multiply both sides\r\n" );
document.write( "of the original equation by this inverse:\r\n" );
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document.write( "\"%28matrix%282%2C2%2C-3%2C-14%2C2%2C9%29%29X=%28matrix%282%2C2%2C8%2C-4%2C0%2C-4%29%29\"\r\n" );
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document.write( "\"%28matrix%282%2C2%2C1%2C0%2C0%2C1%29%29X=%28matrix%282%2C2%2C-72%2C-20%2C16%2C-20%29%29\"\r\n" );
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document.write( "\"X=%28matrix%282%2C2%2C-72%2C-20%2C16%2C-20%29%29\"\r\n" );
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document.write( "Edwin
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