The sum of the three numbers is 82. The second number is double the first. The third number is three less than the second. Find the three numbers. x = first number 2x = second number {the second number is double the first} 2x  3 = third number {the third number is 3 less than the second} x + 2x + 2x  3 = 82 {the sum of the three numbers is 82} 5x  3 = 82 {combined like terms} 5x = 85 {added 3 to each side} x = 17 {divided each side by 5} 2x = 34 {substituted 17, in for x, into 2x} 2x  3 = 31 {substituted 17, in for x, into 2x  3} first number is 17 second number is 34 third number is 31  Algebra House Comments are closed.

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