document.write( "Question 62487This question is from textbook beginning algebra
\n" ); document.write( ": 21. 3X-2Y+-13
\n" ); document.write( " 9X+5Y=16
\n" ); document.write( "I tried to solve this equation using the the process of elimination by addition method. I know I am surpose to use the lcm which i did for 3x and 9x the lcm would be 18 by using this method I still came up with the wrong answer the book has (1,5) can you tell me what I am doing wrong? thanks \n" ); document.write( "
Algebra.Com's Answer #43230 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
1st: 3X-2Y=-13
\n" ); document.write( "2nd: 9X+5Y=16
\n" ); document.write( "----------------
\n" ); document.write( "Multiply 1st by 3 to get:
\n" ); document.write( "3rd: 9x-6y=-39
\n" ); document.write( "---------
\n" ); document.write( "Subtract 3rd from 2nd to get:
\n" ); document.write( "11y=55
\n" ); document.write( "y=5
\n" ); document.write( "-------------
\n" ); document.write( "Substitute into 1st to solve for x, as follows:
\n" ); document.write( "3x-2(5)=-13
\n" ); document.write( "3x=-3
\n" ); document.write( "x= -1
\n" ); document.write( "---------
\n" ); document.write( "Final solution:
\n" ); document.write( "x=-1, y=5
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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