document.write( "Question 400011: Could someone please explain how to do these problems, we are solving problems with two variables and I do not understand how to even start working on them, the directions state...Solve by the addition-or-subtraction method, if someone could explain how they are solved I think I could get it....\r
\n" ); document.write( "\n" ); document.write( "3x-y=-5
\n" ); document.write( "2x+2y=-6\r
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\n" ); document.write( "\n" ); document.write( "I would greatly appreciate it...thanks!!!!
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Algebra.Com's Answer #283229 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
3x-y=-5
\n" ); document.write( "2x+2y=-6 \r
\n" ); document.write( "\n" ); document.write( "-----
\n" ); document.write( "It's arbitrary whether you eliminate the x-terms
\n" ); document.write( "or the y-terms.
\n" ); document.write( "---
\n" ); document.write( "If you want to eliminate the x terms:
\n" ); document.write( "multiply thru the 1st equation by 2
\n" ); document.write( "multiply thru the 2nd equation by 3
\n" ); document.write( "----
\n" ); document.write( "If you want to eliminate the y-terms;
\n" ); document.write( "multiply thru the 1st equation by 2
\n" ); document.write( "leave the 2nd equation alone.
\n" ); document.write( "==========================
\n" ); document.write( "Looks like eliminating the y-terms would be easier so do it:
\n" ); document.write( "6x-2y = 10
\n" ); document.write( "2x+2y=-6
\n" ); document.write( "----------------
\n" ); document.write( "Add and solve for \"x\":
\n" ); document.write( "8x = 4
\n" ); document.write( "x = 1/2
\n" ); document.write( "---
\n" ); document.write( "Solve for \"y\":
\n" ); document.write( "2x+2y = -6
\n" ); document.write( "x+y = -3
\n" ); document.write( "(1/2) + y = -3
\n" ); document.write( "y = -7/2
\n" ); document.write( "----------------
\n" ); document.write( "Hope that helps.
\n" ); document.write( "Check out the web using Google to search for
\n" ); document.write( "\"solving linear systems\" to see more on this
\n" ); document.write( "subject.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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