document.write( "Question 550717: 10x + 5y = 52.5
\n" ); document.write( "30x – 7y = 80.5 \n" ); document.write( "

Algebra.Com's Answer #359056 by mananth(16946) $\"\"$ $\"About$

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10 x + 5 y = 52.5 .............1
\n" ); document.write( "30 x -7 y = 80.5 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 7
\n" ); document.write( "Multiply (2) by 5
\n" ); document.write( "70 x 35 y = 367.5
\n" ); document.write( "150 x -35 y = 402.5
\n" ); document.write( "Add the two equations
\n" ); document.write( "220 x = 770
\n" ); document.write( "/ 220
\n" ); document.write( "x = 3.50
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "10 x + 5 y = 52.5
\n" ); document.write( "35 + 5 y = 52.5
\n" ); document.write( " 5 y = 52.5 -35
\n" ); document.write( " 5 y = 17.5
\n" ); document.write( " y = 3.50 \n" ); document.write( "

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