document.write( "Question 63610: Can you please help me solve this system of equation using the substitution and elimination methods.\r
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document.write( "8x + 9 = -5y
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document.write( "-3x + 3y = -21 \n" );
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Algebra.Com's Answer #44350 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 8x+5y=-9 \n" ); document.write( "-3x+3y=-21 now multiply the first equatuion by 3 & multiply the second one by 8 \n" ); document.write( "24x+15y=-27 \n" ); document.write( "-24x+24y=-168 now add. \n" ); document.write( "----------------------------------- \n" ); document.write( "39y=-195 \n" ); document.write( "x=-195/39 \n" ); document.write( "x=-5 solution \n" ); document.write( "3x+3*-5=-21 \n" ); document.write( "3x-15=-21 \n" ); document.write( "3x=6 \n" ); document.write( "x=6/3 \n" ); document.write( "x=2 solution \n" ); document.write( " \n" ); document.write( " |