document.write( "Question 238654: solve using addition method
\n" ); document.write( "3x-2.5y=7.125
\n" ); document.write( "2.5x-3y=7.3125 \n" ); document.write( "
Algebra.Com's Answer #175437 by Alan3354(69443)\"\" \"About 
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3x-2.5y=7.125 eqn 1
\n" ); document.write( "2.5x-3y=7.3125 eqn 2
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\n" ); document.write( "-18x + 15y = -42.75 eqn 1 x -6
\n" ); document.write( "12.5x- 15y = 36.5625 eqn 2 x 5
\n" ); document.write( "-------------------- Add
\n" ); document.write( "-5.5x = -6.1875
\n" ); document.write( "x = 1.125
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\n" ); document.write( "Sub for x into eqn 1
\n" ); document.write( "3*1.125 - 2.5y = 7.125
\n" ); document.write( "-2.5y = 3.75
\n" ); document.write( "y = -1.5\r
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