document.write( "Question 1181280: The first four terms of an arithmetic sequence are 2, a-b, 2a+b+7, a-3b . Find a and b.
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Algebra.Com's Answer #811148 by josgarithmetic(39797) ![]() You can put this solution on YOUR website! \r \n" ); document.write( "\n" ); document.write( "Common difference, equal \n" ); document.write( " \n" ); document.write( "Simplify and solve. \n" ); document.write( " |