document.write( "Question 63610: Can you please help me solve this system of equation using the substitution and elimination methods.\r
\n" ); document.write( "\n" ); document.write( "8x + 9 = -5y
\n" ); document.write( "-3x + 3y = -21
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Algebra.Com's Answer #44350 by checkley71(8403)\"\" \"About 
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
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