How do you write the algebraic expression for "the sum on two consecutive number"?

1 Answer
Sep 23, 2015

2 k + 1, (k in NN)

Explanation:

Denoting some natural number by k, the next largest consecutive number may be denoted by k + 1.

Their sum will be k + (k + 1) = 2 k + 1

(where k is an element of the natural numbers, which are conventionally denoted by NN, as noted in parentheses in the brief summary answer above)