document.write( "Question 344181: how do you get the equation set up for the problem:\r
\n" ); document.write( "\n" ); document.write( "Kathy is six years younger than bill. 12 years ago, bill was twice as old as Kathy was then. how old are they now?
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Algebra.Com's Answer #246305 by ankor@dixie-net.com(22740)\"\" \"About 
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how do you get the equation set up for the problem:
\n" ); document.write( "Let k = Kathy's present age
\n" ); document.write( "Let b = Bill's present age
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\n" ); document.write( "Write an equation for each statement simplify each equation:
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\n" ); document.write( "\"Kathy is six years younger than bill.
\n" ); document.write( "k = (b-6)
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\n" ); document.write( "\" 12 years ago, bill was twice as old as Kathy was then.\"
\n" ); document.write( "b - 12 = 2(k - 12)
\n" ); document.write( "b - 12 = 2k - 24
\n" ); document.write( "b - 12 = 2k - 24 + 12
\n" ); document.write( "b = 2k - 12
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\n" ); document.write( "Now all you have to do is replace k with (b-6) and solve for b\r
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\n" ); document.write( "\n" ); document.write( " how old are they now?
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