document.write( "Question 837220: help me set up equation and solve.
\n" ); document.write( "A farmer grows only sunflowers and flax on his 240-acre farm. This year, he planted 80 more acres of sunflower than of flax. How many acres of each crop has he planted?
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Algebra.Com's Answer #504521 by LinnW(1048)\"\" \"About 
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set f = acres of flax , s = acres of sunflowers
\n" ); document.write( "f + s = 240
\n" ); document.write( "s = f + 80
\n" ); document.write( "substitute (f + 80) for s in f + s = 240
\n" ); document.write( "f + (f + 80) = 240
\n" ); document.write( "2f + 80 = 240
\n" ); document.write( "add -80 to each side
\n" ); document.write( "2f = 160
\n" ); document.write( "divide each side by 2
\n" ); document.write( "f = 80
\n" ); document.write( "since s = f + 80 ,
\n" ); document.write( "s = 80 + 80
\n" ); document.write( "s = 160
\n" ); document.write( "
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