Question

If x is the first, or smallest, of three consecutive integers, express the sum of the first integer and the third as an algebraic expression containing the variable x.

Answer 1

2(x + 1) = S

Explanation:

Let three consecutive numbers be:

x

x+1

x+2

Now according to given condition:

First term = x

Third term = x + 2

Let their sum as S

The equation will become:

x + x + 2 = S

By adding like terms

2x + 2 = S

We can also take 2 common from left side:

2(x + 1) = S

I hope it will help you!