document.write( "Question 419169: 2\5x - 1\2y -5=0 and 0.07x + 0.06y-200=0 \n" ); document.write( "
Algebra.Com's Answer #293183 by mananth(16949)\"\" \"About 
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2\5x - 1\2y -5=0
\n" ); document.write( "4x-5y=50.........................1
\n" ); document.write( "0.07x + 0.06y-200=0
\n" ); document.write( "multiply by 100
\n" ); document.write( "7x+6y=20000......................2\r
\n" ); document.write( "\n" ); document.write( "4 x + -5 y = 50 .............1
\n" ); document.write( "7 x + 6 y = 20000 .............2
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\n" ); document.write( "multiply (1)by 6
\n" ); document.write( "Multiply (2) by 5
\n" ); document.write( "24 x + -30 y = 300
\n" ); document.write( "35 x + 30 y = 100000
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\n" ); document.write( "Add the two equations
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\n" ); document.write( "59x= 100300
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\n" ); document.write( "/59
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\n" ); document.write( "x=1700
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\n" ); document.write( "plug value of x in (1)
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\n" ); document.write( "4 x + -5 y = 50
\n" ); document.write( "6800 + -5 y = 50
\n" ); document.write( " -5 y = 50 + -6800
\n" ); document.write( " -5 y = -6750
\n" ); document.write( " y = 1350
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