document.write( "Question 456867: solve the system by addition method
\n" ); document.write( "5x=4y-8
\n" ); document.write( "3x+7y=14 \n" ); document.write( "

Algebra.Com's Answer #313513 by mananth(16946) $\"\"$ $\"About$

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5 x + -4 y = -8 .............1
\n" ); document.write( "3 x + 7 y = 14 .............2
\n" ); document.write( "
\n" ); document.write( "multiply (1)by 7
\n" ); document.write( "Multiply (2) by 4
\n" ); document.write( "35 x -28 y = -56
\n" ); document.write( "12 x + 28 y = 56
\n" ); document.write( "Add the two equations
\n" ); document.write( "47 x = 0
\n" ); document.write( "/ 47
\n" ); document.write( "x = 0.
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "5 x + -4 y = -8
\n" ); document.write( "0 + -4 y = -8
\n" ); document.write( " -4 y = -8
\n" ); document.write( " -4 y = -8
\n" ); document.write( " y = 2
\n" ); document.write( " \n" ); document.write( "

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