document.write( "Question 869688: X=16-4y
\n" ); document.write( "3x+4y=8 \n" ); document.write( "

Algebra.Com's Answer #524452 by mananth(16946) $\"\"$ $\"About$

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1 x + 4 y = 16 .............1
\n" ); document.write( "Total value
\n" ); document.write( "3 x + 4 y = 8 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-1 x -4 y = -16
\n" ); document.write( "3 x + 4 y = 8
\n" ); document.write( "Add the two equations
\n" ); document.write( "2 x = -8
\n" ); document.write( "/ 2
\n" ); document.write( "x = -4
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 4 y = 16
\n" ); document.write( "-4 + 4 y = 16
\n" ); document.write( " 4 y = 16 + 4
\n" ); document.write( " 4 y = 20
\n" ); document.write( " y = 5
\n" ); document.write( "x= -4 \n" ); document.write( "

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