document.write( "Question 807768: 2 pencils + 3 pens cost $18.80 and 6 pencils and 6 pens is $45. What is the cost of 1 pen? How much more do pens cost? I'm not sure how to set this up. 2x+3y=18.80 & 6x+6y=45
\n" ); document.write( "But at this point I don't know what to do next.
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Algebra.Com's Answer #486496 by richwmiller(17219)\"\" \"About 
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2x+3y=18.80
\n" ); document.write( "6x+6y=45
\n" ); document.write( "either multiply the first by 2 (To eliminate y's) or the first by 3 (to eliminate4 x's)
\n" ); document.write( "let multiply by two and eliminate y's
\n" ); document.write( "6x+6y=45
\n" ); document.write( "4x+6y=37.60
\n" ); document.write( "subtract
\n" ); document.write( "2x=7.40
\n" ); document.write( "x=3.70
\n" ); document.write( "7.40+3y=18.80
\n" ); document.write( "3y=11.40
\n" ); document.write( "y=3.80\r
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