Question

The sum of a number and negative eleven is negative sixteen. Which of the following is the number?

Answer 1

- 5

Explanation:

let n be the number , then

n + (- 11) = - 16 , that is

n - 11 = - 16 ( add 11 to both sides )

n = - 5

Answer 2

n = -5

Explanation:

Let n be the unknown number

n+ (-11) = -16

Add 11 to each side

n+-11+11 = -16+11

n = -5