document.write( "Question 911438: Use the elimination method to solve the system. \r
\n" ); document.write( "\n" ); document.write( "5a + 8b = 12
\n" ); document.write( "11a − 3b = 47
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #553116 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
5 a + 8 b = 12 .............1
\n" ); document.write( "
\n" ); document.write( "11 a -3 b = 47 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 3
\n" ); document.write( "Multiply (2) by 8
\n" ); document.write( "15 a 24 b = 36
\n" ); document.write( "88 a -24 b = 376
\n" ); document.write( "Add the two equations
\n" ); document.write( "103 a = 412
\n" ); document.write( "/ 103
\n" ); document.write( "a = 4
\n" ); document.write( "plug value of a in (1)
\n" ); document.write( "5 a + 8 b = 12
\n" ); document.write( "20 + 8 b = 12
\n" ); document.write( " 8 b = 12 -20
\n" ); document.write( " 8 b = -8
\n" ); document.write( " b = -1 1
\n" ); document.write( "x= 4
\n" ); document.write( "y= -1
\n" ); document.write( "m.ananth@hotmail.ca
\n" ); document.write( " \n" ); document.write( "

\n" );