document.write( "Question 198190This question is from textbook North Carolina prentice hall mathematics algebra 1
\n" ); document.write( ": Use the solution of the system below to find x-y.
\n" ); document.write( "4x-2y=11
\n" ); document.write( "3x-4y=-6
\n" ); document.write( " \n" ); document.write( "
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4x-2y=11 multiply by -2 & add.
\n" ); document.write( "3x-4y=-6
\n" ); document.write( "-8x+4y=-22
\n" ); document.write( "-------------------
\n" ); document.write( "-5x=-28
\n" ); document.write( "x=-28/-5
\n" ); document.write( "x=28/5 ans.
\n" ); document.write( "3*28/5-4y=-6
\n" ); document.write( "84/5-4y=-6
\n" ); document.write( "-4y=-6-84/5
\n" ); document.write( "-4y=(-6*5-84)/5
\n" ); document.write( "-4y=(-30-84)/5
\n" ); document.write( "-4y=--114/5
\n" ); document.write( "y=(-114/5)/-4
\n" ); document.write( "y=-114/5*-1/4
\n" ); document.write( "y=114/20 ans.
\n" ); document.write( "x-y=28/5-29/10=(28*2-29)/10=(56-29)/10=27/10 ans. \n" ); document.write( "
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