document.write( "Question 338632: Solve the system
\n" ); document.write( "4y=12
\n" ); document.write( "X+4y+z=15
\n" ); document.write( "y-3z=0
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Algebra.Com's Answer #242727 by Alan3354(69443)\"\" \"About 
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Solve the system
\n" ); document.write( "4y=12 --> y = 3
\n" ); document.write( "X+4y+z=15
\n" ); document.write( "y-3z=0 y = 3, find z
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\n" ); document.write( "X+4y+z=15 y & z are known, find x\r
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