document.write( "Question 122480: Solve the systemby addition or substitution.
\n" ); document.write( "3x -4y =8
\n" ); document.write( "6x -2y =10\r
\n" ); document.write( "\n" ); document.write( "This is the answer I got:
\n" ); document.write( "9x-6y =18
\n" ); document.write( "

Algebra.Com's Answer #89910 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
\"3x+-+4y+=+8\"
\n" ); document.write( "\"6x+-+2y+=+10\"
\n" ); document.write( "You can either multiply the 1st one by 2 or the 2nd one by 3 and
\n" ); document.write( "then subtract them. Take your choice. I'll do one of them
\n" ); document.write( "\"3x+-+4y+=+8\"
\n" ); document.write( "\"6x+-+8y+=+16\"
\n" ); document.write( "Now subtract the 2nd from 1st
\n" ); document.write( "\"6x+-+8y+=+16\"
\n" ); document.write( "\"-6x+%2B+2y+=+-10\"
\n" ); document.write( "------------------
\n" ); document.write( "\"-6y+=+6\"
\n" ); document.write( "\"y+=+-1\" answer
\n" ); document.write( "Now substitute this answer into either 1st or 2nd
\n" ); document.write( "\"6x+-+2%28-1%29+=+10\"
\n" ); document.write( "\"6x+%2B+2+=+10\"
\n" ); document.write( "\"6x+=+8\"
\n" ); document.write( "\"x+=+4%2F3\" answer
\n" ); document.write( "-------------
\n" ); document.write( "Now check the answers
\n" ); document.write( "\"3x+-+4y+=+8\"
\n" ); document.write( "\"3%284%2F3%29+-+4%28-1%29+=+8\"
\n" ); document.write( "\"4+%2B+4+=+8\"
\n" ); document.write( "OK
\n" ); document.write( "\"6x+-+2y+=+10\"
\n" ); document.write( "\"6%284%2F3%29+-+2%28-1%29+=+10\"
\n" ); document.write( "\"8+%2B+2+=+10\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );