document.write( "Question 513553: Help! Please, Linear Combinations\r
\n" ); document.write( "\n" ); document.write( "0.5x + 2.2y = 9
\n" ); document.write( "6x + 0.4y = -22 \n" ); document.write( "
Algebra.Com's Answer #343045 by mananth(16946)\"\" \"About 
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0.5x + 2.2y = 9
\n" ); document.write( "6x + 0.4y = -22\r
\n" ); document.write( "\n" ); document.write( "multiply both equations by 10\r
\n" ); document.write( "\n" ); document.write( "5x+22y=90
\n" ); document.write( "60x+4y=-220\r
\n" ); document.write( "\n" ); document.write( "5 x + 22 y = 90 .............1
\n" ); document.write( "60 x + 4 y = -220 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -4
\n" ); document.write( "Multiply (2) by 22
\n" ); document.write( "-20 x -88 y = -360
\n" ); document.write( "1320 x 88 y = -4840
\n" ); document.write( "Add the two equations
\n" ); document.write( "1300 x = -5200
\n" ); document.write( "/ 1300
\n" ); document.write( "x = -4
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "5 x + 22 y = 90
\n" ); document.write( "-20 + 22 y = 90
\n" ); document.write( " 22 y = 90 + 20
\n" ); document.write( " 22 y = 110
\n" ); document.write( " y = 5
\n" ); document.write( " \n" ); document.write( "
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