The sum of three consecutive even integers is equal to 84. Find the numbers

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justaguide's profile pic

justaguide | College Teacher | (Level 2) Distinguished Educator

Posted on

The sum of three consecutive even number is 84. Let the number be 2*n , 2*n + 2 and 2*n + 4.

We have 2n + 2n + 2 + 2n + 4 = 84

=> 6n + 6 = 84

=> 6n = 84 - 6

=> 6n = 78

=> 2n = 78/3

=> 2n = 26

The required numbers are 26 , 28 and 30.

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hala718 | High School Teacher | (Level 1) Educator Emeritus

Posted on

Let the first even integer be x, Then the next even integer is (x+2) and the third is (n+4).

Given that the sum of the three even integers is 84.

Then we will rewrite into an equation as follow:

n + (n+2) + (n+4) = 84

Now we will combine like terms.

==> 3n + 6= 84

Now we will subtract 6 from both sides.

==> 3n = 78

Now we will divide by 3.

==> n= 26

==> n+2 = 28

==> n+4 = 30

Then, the three consecutive even integers are 26, 28, and 30.

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