document.write( "Question 561643: -x-7y=18
\n" ); document.write( "4x+7y=-30 \n" ); document.write( "
Algebra.Com's Answer #364322 by mananth(16946)\"\" \"About 
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-1 x -7 y = 18 .............1
\n" ); document.write( "4 x + 7 y = 30 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-1 x -7 y = 18
\n" ); document.write( "4 x 7 y = 30
\n" ); document.write( "Add the two equations
\n" ); document.write( "3 x = 48
\n" ); document.write( "/ 3
\n" ); document.write( "x = 16
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "-1 x + -7 y = 18
\n" ); document.write( "-16 + -7 y = 18
\n" ); document.write( " -7 y = 18 + 16
\n" ); document.write( " -7 y = 34
\n" ); document.write( " y = -4.86 OR -34/7
\n" ); document.write( " \n" ); document.write( "
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