document.write( "Question 215613: 3x+4y=-8 and -5x+y=-25 \n" ); document.write( "
Algebra.Com's Answer #162907 by RAY100(1637)\"\" \"About 
You can put this solution on YOUR website!
(1) 3x+4y = -8
\n" ); document.write( ".
\n" ); document.write( "(2) -5x +y = -25,,,,,or y= 25+5x,,,,,
\n" ); document.write( ".
\n" ); document.write( "subst in (1),,,,3x +4(25+5x) = -8
\n" ); document.write( ".
\n" ); document.write( "3x +100+20x = -8
\n" ); document.write( ".
\n" ); document.write( "23x = -108
\n" ); document.write( ".
\n" ); document.write( "x= -4.7,,,,,,,y=25+5(-4.7) = 1.5
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "check,,,(1) 3(-4.7) +4(1.5) = -8
\n" ); document.write( ".
\n" ); document.write( "-14.1 +6 = -8,,,,,ok
\n" ); document.write( ".
\n" ); document.write( "(2) -5(-4.7) + 1.5 = -25,,,ok
\n" ); document.write( ".
\n" ); document.write( " \n" ); document.write( "
\n" );