document.write( "Question 464613: 10r-20t=20
\n" ); document.write( " r+60t=-29
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Algebra.Com's Answer #318288 by jorel1380(3719)\"\" \"About 
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10r-20t=20
\n" ); document.write( "r+60t=-29
\n" ); document.write( "30r-60t=60
\n" ); document.write( "31r=31
\n" ); document.write( "r=1
\n" ); document.write( "t=-1/2..
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