How do you evaluate #16+ ( - 1)#?

3 Answers
John C. · [eden]
May 5, 2017

15

Explanation:

So there are a few scenarios you must learn.

  1. A positive sign multiplied with a positive sign.
    #(+) * (+) = +#

  2. A positive sign multiplied with a negative sign.
    #(+) * (-) = -#

  3. A negative sign multiplied with a positive sign.
    #(-) * (+) = -#

  4. A negative sign multiplied with a negative sign.
    #(-) * (-) = +#

In the question #16+(-1)#, you apply the second scenario. Both are the same and interchangeable.

Therefore, #16 + (-1) = 16-1 = 15#

Purple Rose
May 5, 2017

The answer is #15.#

Explanation:

When you have a #+# and a #-# together, you subtract and take the sign of the number that is bigger.

#16 + (-1)#

#= 16 -1#

#=15#

So, the answer is #15.#

[eden]
May 7, 2017

A = # 16 - 1# = #15#

Explanation:

The only details you have to remember when performing operations such as these is the fact that when there is a #+# and a #-#, the #-#, will - generally - "overpower" the #+# and turn the operation into a negative. All the best!

{Chan}

Related questions
See all questions in Exponents
Impact of this question
3591 views around the world
You can reuse this answer
Creative Commons License