document.write( "Question 466662: The solution for 4x-9y=10.5 and 7x-2x=6.5 \n" ); document.write( "

Algebra.Com's Answer #319938 by mananth(16949) $\"\"$ $\"About$

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4 x -9 y = 10.5 .............1
\n" ); document.write( "7 x -2 y = 6.5 .............2
\n" ); document.write( "
\n" ); document.write( "multiply (1)by 2
\n" ); document.write( "Multiply (2) by -9
\n" ); document.write( "8 x -18 y = 21
\n" ); document.write( "-63 x 18 y = -58.5
\n" ); document.write( "Add the two equations
\n" ); document.write( "-55 x = -37.5
\n" ); document.write( "/ -55
\n" ); document.write( "x = 0.68 OR 2/3
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "4 x + -9 y = 10.5
\n" ); document.write( "2.73 + -9 y = 10.5
\n" ); document.write( " -9 y = 10.5 -2.73
\n" ); document.write( " -9 y = 7.77
\n" ); document.write( " y = -0.86 OR - 6/7
\n" ); document.write( " \n" ); document.write( "

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