document.write( "Question 958304: Kevin has a total value of $135 in 5 and 10 dollar bills. He has 18 bills total. Use linear systems to determine how many 5's and 10's Kevin has in his possession. \n" ); document.write( "
Algebra.Com's Answer #585712 by macston(5194)\"\" \"About 
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F=fives; T=tens
\n" ); document.write( "F+T=18
\n" ); document.write( "F=18-T
\n" ); document.write( "$5F+$10T=$135 Substitute for F
\n" ); document.write( "$5(18-T)+$10T=$135
\n" ); document.write( "$90-$5T+$10T=$135 Subtract $90 from each side.
\n" ); document.write( "$5T=$45 Divide each side by $5.
\n" ); document.write( "T=9 ANSWER 1: There are 9 ten dollar bills.
\n" ); document.write( "F=18-T=18-9=9 ANSWER 2: There are 9 five dollar bills.
\n" ); document.write( "CHECK:
\n" ); document.write( "$5F+$10T=$135
\n" ); document.write( "$5(9)+$10(9)=$135
\n" ); document.write( "$45+$90=$135
\n" ); document.write( "$135=$135
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