document.write( "Question 720386: Please solve by substitution or elimination.
\n" ); document.write( "-3x-3y=-15
\n" ); document.write( " 8x+6y=24 \n" ); document.write( "
Algebra.Com's Answer #442999 by Matthewcus11(2)\"\" \"About 
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Simultaneous Equation by elimination method
\n" ); document.write( "-3x-3y=-15
\n" ); document.write( "8x+6y=24\r
\n" ); document.write( "\n" ); document.write( "(-3x-3y=-15)X6
\n" ); document.write( "(8x+6y=24)X-3\r
\n" ); document.write( "\n" ); document.write( "-18x-18y=-90
\n" ); document.write( "-24x-18y=-72
\n" ); document.write( "-
\n" ); document.write( "6x =-18
\n" ); document.write( "/6\r
\n" ); document.write( "\n" ); document.write( "x=-3\r
\n" ); document.write( "\n" ); document.write( "let equation 2 be use for solving y\r
\n" ); document.write( "\n" ); document.write( "8x+6y =24\r
\n" ); document.write( "\n" ); document.write( "8(-3)+6y=24\r
\n" ); document.write( "\n" ); document.write( "-24+6y=24\r
\n" ); document.write( "\n" ); document.write( " 6y =24+24=48
\n" ); document.write( " /6\r
\n" ); document.write( "\n" ); document.write( " 6y=48
\n" ); document.write( " /6 /6\r
\n" ); document.write( "\n" ); document.write( " y=8
\n" ); document.write( " \n" ); document.write( "
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