document.write( "Question 454255: solve using elimination method\r
\n" ); document.write( "\n" ); document.write( "x+8y=31
\n" ); document.write( "2x+7y=35 \n" ); document.write( "

Algebra.Com's Answer #311954 by mananth(16946) $\"\"$ $\"About$

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1 x + 8 y = 31 .............1
\n" ); document.write( "2 x + 7 y = 35 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -7
\n" ); document.write( "Multiply (2) by 8
\n" ); document.write( "-7x-56y =-217
\n" ); document.write( "16x+56y =280
\n" ); document.write( "Add the two equations
\n" ); document.write( "9x=63
\n" ); document.write( "/9
\n" ); document.write( "x=7
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "x+8y=31
\n" ); document.write( "7+8y=31
\n" ); document.write( "8y=31-7
\n" ); document.write( "8y=24
\n" ); document.write( "y=3
\n" ); document.write( " \n" ); document.write( "

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