document.write( "Question 644094: The sum of three numbers is thirty. The second number is twice the first number, and the third number is 5 less than the second number. Find the three numbers. \n" ); document.write( "
Algebra.Com's Answer #404809 by nerdybill(7384)\"\" \"About 
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The sum of three numbers is thirty. The second number is twice the first number, and the third number is 5 less than the second number. Find the three numbers.
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\n" ); document.write( "Let x = first number
\n" ); document.write( "then from \"The second number is twice the first number\"
\n" ); document.write( "2x = second number
\n" ); document.write( "and from \"third number is 5 less than the second number\"
\n" ); document.write( "2x-5 = third number
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\n" ); document.write( "we get our equation from \"sum of three numbers is thirty\"
\n" ); document.write( "x + 2x + 2x-5 = 30
\n" ); document.write( "5x-5 = 30
\n" ); document.write( "5x = 35
\n" ); document.write( "x = 7 (first number)
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\n" ); document.write( "second number:
\n" ); document.write( "2x = 2(7) = 14
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\n" ); document.write( "third number:
\n" ); document.write( "2x-5 = 2(7)-5 = 14-5 = 9
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