Question

find the sum of (a) 21 and -12​

Answer 1

Step-by-step explanation:

21+(-15)=6

this is the correct answer

Answer 2

The sum of 21 and -12 is: 9

Given,

Two numbers are 21 and -12.

To find,

The summation of 21 and -12.

Solution,

Addition, Subtraction, Multiplication and Division are the basic concepts in maths.

The addition is a process where we can add n natural numbers.

The numbers that are added together are called addends.

If we add 0 to another number the answer will be the number itself.

If we add 1 to a number the sum will be equal to the successor of that number.

In a dice, the sum of opposite sites is always 7.

Here, we are given 2 numbers to add.

21+(-12)

=9

We always take the sign of the larger number, where 21 is the larger number so the sign will be positive.

The sum of 21 and -12 is 9.

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