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 #547701 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Use Cramer's rule,\r
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\n" ); document.write( "\"abs%28A%29=-29\"
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\n" ); document.write( "\"abs%28A%5Ba%5D%29=-480\"
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\n" ); document.write( "\"abs%28A%5Bb%5D%29=75\"
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\n" ); document.write( "\"abs%28A%5Bc%5D%29=-15\"
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\n" ); document.write( "\"abs%28A%5Bd%5D%29=85\"
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\n" ); document.write( "\"a=abs%28A%5Ba%5D%29%2Fabs%28A%29=480%2F29\"
\n" ); document.write( "\"b=abs%28A%5Ba%5D%29%2Fabs%28A%29=-%2875%2F29%29\"
\n" ); document.write( "\"c=abs%28A%5Ba%5D%29%2Fabs%28A%29=15%2F29\"
\n" ); document.write( "\"d=abs%28A%5Bd%5D%29%2Fabs%28A%29=-%2885%2F29%29\"
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