document.write( "Question 1018567: 3u+z=15
\n" ); document.write( "U+2z=10
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Algebra.Com's Answer #634644 by FrankM(1040)\"\" \"About 
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3u+z=15
\n" ); document.write( "U+2z=10\r
\n" ); document.write( "\n" ); document.write( "double 1st equation\r
\n" ); document.write( "\n" ); document.write( "6u+2z=30
\n" ); document.write( "U+2z=10\r
\n" ); document.write( "\n" ); document.write( "subtract\r
\n" ); document.write( "\n" ); document.write( "5u=20
\n" ); document.write( "u=4
\n" ); document.write( "z=3
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