document.write( "Question 393594: Assuming the general expression for multiples to be 3N, 3(n+1), 3(n+2) etc.\r
\n" );
document.write( "\n" );
document.write( "Find 4 consecutive multiples of 3 such that 5 times the sum of the 1st and 4th is 6 less than 13 times the 3rd.\r
\n" );
document.write( "\n" );
document.write( "I have worked and reworked and can't come up with the right answer. Can you explain these steps to me?\r
\n" );
document.write( "\n" );
document.write( "Thanks so much! \n" );
document.write( "
Algebra.Com's Answer #279336 by robertb(5830)![]() ![]() You can put this solution on YOUR website! 3n, 3(n+1), 3(n+2), and 3(n+3)\r \n" ); document.write( "\n" ); document.write( "Then \n" ); document.write( "5(3n + 3(n+3)) = 13(3(n+2)) - 6 \n" ); document.write( "==> 5(3n + 3n + 9) = 39(n+2) - 6 \n" ); document.write( "==> 5(6n + 9) = 39n + 78 - 6 \n" ); document.write( "==> 30n+ 45 = 39n + 72 \n" ); document.write( "==> -27 = 9n \n" ); document.write( "==> n = -3\r \n" ); document.write( "\n" ); document.write( "Then the numbers are -9, -6, -3, 0. \n" ); document.write( " |