document.write( "Question 1047550: The balcony of a theater has 12 rows of seats. The last row contains 8 seats, and each of the other rows contains one more seat than the rows behind it. How many seats are there in the balcony? \n" ); document.write( "
Algebra.Com's Answer #663116 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "Arithmetic progression with the first term 8 and the common difference 1.\r
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\n" ); document.write( "\n" ); document.write( "On arithmetic progressions, see the lessons \r
\n" ); document.write( "\n" ); document.write( "    - Arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - Chocolate bars and arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on arithmetic progressions \r
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\n" ); document.write( "\n" ); document.write( "OVERVIEW of my lessons on arithmetic progressions with short annotations is in the lesson  OVERVIEW of lessons on arithmetic progressions.\r
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