document.write( "Question 585565: x+y=20
\n" ); document.write( "30x+50y=880
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #373407 by mananth(16946) $\"\"$ $\"About$

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1 x + 1 y = 20 .............1
\n" ); document.write( "30 x + 50 y = 880 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -50
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-50 x -50 y = -1000
\n" ); document.write( "30 x + 50 y = 880
\n" ); document.write( "Add the two equations
\n" ); document.write( "-20 x = -120
\n" ); document.write( "/ -20
\n" ); document.write( "x = 6
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 1 y = 20
\n" ); document.write( "6 + 1 y = 20
\n" ); document.write( " 1 y = 20-6
\n" ); document.write( " 1 y = 14
\n" ); document.write( " y = 14
\n" ); document.write( " \n" ); document.write( "

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