document.write( "Question 558274: 4x+2y=-18
\n" ); document.write( "5x+y=-27\r
\n" ); document.write( "\n" ); document.write( "What is the solution to the system of equations using linear combination or substitution. \n" ); document.write( "

Algebra.Com's Answer #362998 by mananth(16946) $\"\"$ $\"About$

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4 x + 2 y = -18 .............1
\n" ); document.write( "5 x + 1 y = -27 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by 1
\n" ); document.write( "Multiply (2) by -2
\n" ); document.write( "4 x 2 y = -18
\n" ); document.write( "-10 x -2 y = 54
\n" ); document.write( "Add the two equations
\n" ); document.write( "-6 x = 36
\n" ); document.write( "/ -6
\n" ); document.write( "x = -6
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "4 x + 2 y = -18
\n" ); document.write( "-24 + 2 y = -18
\n" ); document.write( " 2 y = -18 + 24
\n" ); document.write( " 2 y = 6
\n" ); document.write( " y = 3\r
\n" ); document.write( "\n" ); document.write( "solution (-6,3) \n" ); document.write( "

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