document.write( "Question 1027645: Solve this pair of simultaneous equations by the elimination method:
\n" ); document.write( "4x + 2y = -8
\n" ); document.write( "x - 2y = -7 \n" ); document.write( "

Algebra.Com's Answer #642881 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
4.00 x + 2.00 y = -8.00 .............1
\n" ); document.write( "Total value
\n" ); document.write( "1.00 x -2.00 y = -7.00 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1.00
\n" ); document.write( "Multiply (2) by 1.00
\n" ); document.write( "4.00 x 2.00 y = -8.00
\n" ); document.write( "1.00 x -2.00 y = -7.00
\n" ); document.write( "Add the two equations
\n" ); document.write( "5.00 x = -15.00
\n" ); document.write( "/ 5.00
\n" ); document.write( "x = -3.00
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "4.00 x + 2.00 y = -8.00
\n" ); document.write( "-12.00 + 2.00 y = -8.00
\n" ); document.write( " 2.00 y = -8.00 + 12.00
\n" ); document.write( " 2.00 y = 4.00
\n" ); document.write( " y = 2.00
\n" ); document.write( "x= -3.00
\n" ); document.write( "y= 2.00
\n" ); document.write( " \n" ); document.write( "

\n" );