document.write( "Question 363147: Janet has five fewer fifteen-cent stamps than twenty-cent stamps. If the total value of the stamps is $3.45, how many twenty-cent stamps does she have? \n" ); document.write( "
Algebra.Com's Answer #258935 by checkley77(12844)\"\" \"About 
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.15x+.20y=3.45
\n" ); document.write( "x=y-5
\n" ); document.write( ".15(y-5)+.20y=3.45
\n" ); document.write( ".15y-.75+.20y=3.45
\n" ); document.write( ".35y=3.45+.75
\n" ); document.write( ".35y=4.20
\n" ); document.write( "y=4.20/.35
\n" ); document.write( "y=12 20 cent stamps.
\n" ); document.write( "x=12-5=7 15 cent stamps
\n" ); document.write( "Proof:
\n" ); document.write( ".15*7+.20*12=3.45
\n" ); document.write( "1.05+2.40=3.45
\n" ); document.write( "3.45=3.45
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