document.write( "Question 1088826: If the 4th term of an arithmetic sequence is 24 and the 12th term is 56, what is the first term?? \n" ); document.write( "
Algebra.Com's Answer #703144 by josgarithmetic(39618)\"\" \"About 
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a, first term
\n" ); document.write( "d, common difference\r
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\n" ); document.write( "\n" ); document.write( "\"system%28a%2B3d=24%2Ca%2B11d=56%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"11d-3d=56-24\"
\n" ); document.write( "\"8d=32\"
\n" ); document.write( "\"d=4\"\r
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\n" ); document.write( "\n" ); document.write( "\"a=24-3d\"
\n" ); document.write( "\"a=24-3%2A4\"
\n" ); document.write( "\"a=24-12\"
\n" ); document.write( "\"highlight%28a=12%29\"
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