What three consecutive integers have a sum of 351?




Here we will use algebra to find three consecutive integers whose sum is 351. We start by assigning X to the first integer. Since they are consecutive, it means that the 2nd number will be X + 1 and the 3rd number will be X + 2 and they should all add up to 351. Therefore, you can write the equation as follows:

(X) + (X + 1) + (X + 2) = 351


To solve for X, you first add the integers together and the X variables together. Then you subtract three from each side, followed by dividing by 3 on each side. Here is the work to show our math:

X + X + 1 + X + 2 = 351
3X + 3 = 351

3X + 3 - 3 = 351 - 3
3X = 348

3X/3 = 348/3
X = 116

Which means that the first number is 116, the second number is 116 + 1 and the third number is 116 + 2. Therefore, three consecutive integers that add up to 351 are 116, 117, and 118.

116 + 117 + 118 = 351

We know our answer is correct because 116 + 117 + 118 equals 351 as displayed above.


Three Consecutive Integers
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What three consecutive integers have a sum of 352?
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