Question

Which correctly gives the expression using addition?

–18.6 – 31.5

A.
–18.6 + 31.5

B.
18.6 + 31.5

C.
18.6 + (–31.5)

D.
–18.6 + (–31.5)

Answer 1

D BECAUSE -

Answer 2

thanks bt explain

Answer 3

To the negative sign, you must also add an addition sign.

Answer 4

I learned that trick, in a course in mathematics. How it works? I don't know. It just works.

Answer 5

*To add the negative sign

Answer 6

Then, when adding the two negatives, you get your answer.

Answer 7

:) My professor was always very vague, I have learned from his ways.