document.write( "Question 1005949: Write down the first term and the common difference of the arithmetic progression whose \n" );
document.write( "fifth term is 52 and the difference of the 9th and 13th term is 40.\r \n" );
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document.write( "I've tried and come up with this but I'm pretty certain it's wrong \n" );
document.write( "Difference between the 13th and 9th term = (a + 12d) – (a + 8d) = 4d = α \n" );
document.write( "Fifth term is a + 4d = 52 \n" );
document.write( "First term a = 52 – α \n" );
document.write( "Common difference d = α/4 \n" );
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