document.write( "Question 61101: Anna has 12 bills some $5.00 and 10.00 the total value is $100.00 how many of each bill does Anna have? \n" ); document.write( "
Algebra.Com's Answer #42030 by tutorcecilia(2152)\"\" \"About 
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Ax+By=C [Use the standard form of a line to solve]
\n" ); document.write( "$5.00 x + $10.00y=$100
\n" ); document.write( "and
\n" ); document.write( "x+y=12
\n" ); document.write( "So, x+(12-x)=12\r
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\n" ); document.write( "5x+10(12-x)=100
\n" ); document.write( "5x+120-10x=100 [solve for x]
\n" ); document.write( "-5x=100-120
\n" ); document.write( "-5x=-20
\n" ); document.write( "x=4\r
\n" ); document.write( "\n" ); document.write( "y=(12-x)=12-4=8 [solve for y]
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\n" ); document.write( "Checking:
\n" ); document.write( "$5.00 (4) + $10.00(8)=$100
\n" ); document.write( "$20 + $80 = $100
\n" ); document.write( "$100=$100
\n" ); document.write( "and checking:
\n" ); document.write( "x+y=12
\n" ); document.write( "4+8=12
\n" ); document.write( "12=12\r
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