document.write( "Question 168641: Please help me solve this equation: \r
\n" ); document.write( "\n" ); document.write( "Using a System of 3 equations.\r
\n" ); document.write( "\n" ); document.write( "9.) Gina sells magazines part time. On Thursday, Friday, and Saturday, she sold $66 worth. On Thursday she sold $3 more than on Friday. On Saturday She sold $6 more than on Thursday. How much did she take in each day? \n" ); document.write( "
Algebra.Com's Answer #124282 by stanbon(75887)\"\" \"About 
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On Thursday, Friday, and Saturday, she sold $66 worth. On Thursday she sold $3 more than on Friday. On Saturday She sold $6 more than on Thursday. How much did she take in each day?
\n" ); document.write( "------------
\n" ); document.write( "T + F + S = 66
\n" ); document.write( "T = F + 3
\n" ); document.write( "S = T + 6
\n" ); document.write( "--------------------
\n" ); document.write( "Rearrange the equations:
\n" ); document.write( "T + F + S = 66
\n" ); document.write( "T - F + 0 = 3
\n" ); document.write( "T + 0 - S = -6
\n" ); document.write( "------------------
\n" ); document.write( "Solve the system:
\n" ); document.write( "T = 21
\n" ); document.write( "F = 18
\n" ); document.write( "S = 27
\n" ); document.write( "===========
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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