document.write( "Question 785776: Solve the system by the elimination method.\r
\n" ); document.write( "\n" ); document.write( "6x+7y=4
\n" ); document.write( "5x+8y=-1 \n" ); document.write( "

Algebra.Com's Answer #477714 by mananth(16946) $\"\"$ $\"About$

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6 x + 7 y = 4 .............1
\n" ); document.write( "Total value
\n" ); document.write( "5 x + 8 y = -1 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -8
\n" ); document.write( "Multiply (2) by 7
\n" ); document.write( "-48 x -56 y = -32
\n" ); document.write( "35 x + 56 y = -7
\n" ); document.write( "Add the two equations
\n" ); document.write( "-13 x = -39
\n" ); document.write( "/ -13
\n" ); document.write( "x = 3
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "6 x + 7 y = 4
\n" ); document.write( "18 + 7 y = 4
\n" ); document.write( " 7 y = 4 -18
\n" ); document.write( " 7 y = -14
\n" ); document.write( " y = -2
\n" ); document.write( "x= 3
\n" ); document.write( "y= -2
\n" ); document.write( " \n" ); document.write( "

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