document.write( "Question 903022: 2a + 3b + c + 2d = 20
\n" ); document.write( "4a + b + 2c + 5d = 50
\n" ); document.write( "a + 2b + 3c + d = 10
\n" ); document.write( "2a + 4b + 2c + 3d = 15
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Algebra.Com's Answer #550582 by sonic1(3)\"\" \"About 
You can put this solution on YOUR website!
You may want to use my Matrix calculator.
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