Question

the sum of three consecutive numbers = 84. find the number​

Answer 1

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Answer 2

Let the three unknown consecutive numbers be $x$, $(x+1)$ and $(x+2)$ respectively.

As per the question,

$x + (x + 1) + (x + 2) = 84$

Remove parenthesis.

$x + x + 1 + x + 2 = 84$

Collect like terms.

$(x + x + x) + (1 + 2) = 84$

$3x + 3 = 84$

Now, subtract both sides by 3.

$3x = 81$

Next, divide both sides by 3.

$x = 27$

Therefore the three consecutive numbers are $\boxed{27 }$, $\boxed{ 28 }$ and $\boxed{ 29 }$ respectively.