document.write( "Question 884949: five consecutive integers have the property that the sum of the first 4 is exactly three times the fifth. find the sum of the nest five consecutive integers. \n" ); document.write( "
Algebra.Com's Answer #534804 by JulietG(1812)\"\" \"About 
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A + B + C + D = 3E
\n" ); document.write( "B = A+1 (because the numbers are consecutive)
\n" ); document.write( "C = A+2
\n" ); document.write( "D = A+3
\n" ); document.write( "E = A+4
\n" ); document.write( "Let's find A. Then, since everything is consecutive, we'll know the values of the others.
\n" ); document.write( "Substitute the known values from the bottom equations into the top.
\n" ); document.write( "A + B + C + D = 3E
\n" ); document.write( "A + (A+1) + (A+2) + (A+3) = 3(A+4)
\n" ); document.write( "Add / Distribute
\n" ); document.write( "4A + 6 = 3A + 12
\n" ); document.write( "Subtract 3A from each side
\n" ); document.write( "A + 6 = 12
\n" ); document.write( "Subtract 6 from each side
\n" ); document.write( "A = 6
\n" ); document.write( "If the first number is 6, the other numbers are 7,8,9, and 10
\n" ); document.write( "Let's prove it.
\n" ); document.write( "6+7+8+9 = 30
\n" ); document.write( "10 * 3 = 30
\n" ); document.write( "Success!
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