Question

The value of $( + 13) + ( - 12)$is equal to
A.$ + 1$
B.$ + 13$
C.$ - 1$
D.None of these

Answer 1

Hint: Here, first of all we will open the brackets and will re-write in the simplified form and then combine the terms and use the concept that the product of plus and minus is minus and will simplify for the resultant required value.

Complete step-by-step answer:
Take the given expression: $( + 13) + ( - 12)$
First of all open the brackets for the given terms, remember when there is no sign outside the bracket then by default it is positive and it will make no difference for the sign of the terms inside the bracket. Also, remember when there is a negative sign then there is change in the sign of the terms inside the bracket. Positive terms will become negative and negative will become positive.
$ = 13 - 12$
Simplify the above expression finding the difference of the terms, always remember when you subtract a smaller number from the bigger number the resultant value is always positive.
$ = 1$
Hence, from the given multiple choices the correct option is option A.
So, the correct answer is “Option A”.

Note: Always remember the basic mathematical operations to simplify the different combination of positive and the negative terms. When you add two terms with two different signs then the sign depends on the sign of the bigger term and is applied to the resultant value.