document.write( "Question 71996This question is from textbook algebra
\n" ); document.write( ": i understand the work of the first part of the problem but idont understand the second part can you show me thanks\r
\n" ); document.write( "\n" ); document.write( "addition of linear equation
\n" ); document.write( "8x-4y=16
\n" ); document.write( "4x+5y=22\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #51479 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
1st: 8x-4y=16
\n" ); document.write( "2nd: 4x+5y=22
\n" ); document.write( "------------
\n" ); document.write( "Multiply 2nd by 2 to get:
\n" ); document.write( "3rd: 8x+10y = 44
\n" ); document.write( "------
\n" ); document.write( "Subtract 1st from 3rd to get:
\n" ); document.write( "4th: 14y=28
\n" ); document.write( "y=2
\n" ); document.write( "Substitute that into 2nd (or 1st) to solve for \"x\":
\n" ); document.write( "4x+5*2 = 22
\n" ); document.write( "4x = 12
\n" ); document.write( "x=3
\n" ); document.write( "========
\n" ); document.write( "Check the answer is 1st (or 2nd):
\n" ); document.write( "8x-4y=16
\n" ); document.write( "8*3-4*2=16
\n" ); document.write( "24-8=16
\n" ); document.write( "16=16
\n" ); document.write( "That checks.
\n" ); document.write( "============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );