Question

100 points!!!
the image is the question.

Answer 1

Write it as an algebraic expression.

5 + x = 0

x = -5

The number line is below in the jpeg.

Answer 2

-5

Explanation:

The additive inverse property states that adding a number and its inverse results in a sum of zero.

`\boxed{a+(-a)=0}`

If the sum of two numbers is zero, and one number is 5 then:

`\implies 5+(-5)=0`

Therefore, the other number is -5.