document.write( "Question 6161: This question is also on elimination...
\n" ); document.write( "3x+4y=19
\n" ); document.write( "3x+6y=33
\n" ); document.write( "My answers were (7,-1/2)
\n" ); document.write( "Now, i'm having the same problem that i had with the last one. The 7 checks, but the -1/2 doesn't. Any suggestions on this one? Thanks
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Algebra.Com's Answer #3277 by glabow(165)\"\" \"About 
You can put this solution on YOUR website!
Must be an arithmetic error!
\n" ); document.write( "Look for the simplest way to eliminate one of the variables. Since both equations contain 3x, subtracting one from the other will eliminate x.
\n" ); document.write( "\"3x%2B4y=19\"
\n" ); document.write( "\"3x%2B6y=33\"
\n" ); document.write( "\"-3x-4y=-19\" [subtract the first from the second]
\n" ); document.write( "\"2y=14\"
\n" ); document.write( "\"y=7\"
\n" ); document.write( "\"3x%2B28=19\" [substitute 7 for y]
\n" ); document.write( "\"3x=-9\"
\n" ); document.write( "\"x=-3\"
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