document.write( "Question 830646: state three consecutive terms in the arithmetic progression 40,33,26 ...which sum up to 15 \n" ); document.write( "

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Q:
\n" ); document.write( "State three consecutive terms in the arithmetic progression 40,33,26 ...which sum up to 15.
\n" ); document.write( "----------------------------------------------------
\n" ); document.write( "A:
\n" ); document.write( "The common difference is equal to
\n" ); document.write( "33 - 40 = 26 - 33 = -7
\n" ); document.write( "The three consecutive terms are x, x - 7, and x - 14.
\n" ); document.write( "x + (x - 7) + (x - 14) = 15
\n" ); document.write( "3x - 21 = 15
\n" ); document.write( "x = (15 + 21)/3 = 12
\n" ); document.write( "x - 7 = 5 and
\n" ); document.write( "x - 14 = -2
\n" ); document.write( "Three consecutive terms: 12, 5, -2 \n" ); document.write( "

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