1

Problem

Addition of integers:
21 + (-18) + (6) + 7

2

Step

The integers are

21, - 18, - 6 and 7

3

Formula

Here, we apply the rule of addition of positive and negative integers:

\$ (+) + (-) = "use the sign of larger absolute value number" \$

4

Step

Let us add the positive and negative integers

21 + (- 18) + (- 6) + 7

5

Step

After adding the positive and negative integers

(+28) - (24)

6

Step

After simplification

4

7

Solution

Therefore, the addition of integers is 4.

8

Sumup

Please Summarize Problem, Hint, Clue, Formula and Steps

Choices

9

Choice-A

This total does not reflect the correct sum of 21 + (-18) + (-6) + 7 which is 4

Wrong 6

10

Choice-B

This is correct because it accurately represents the sum of the given integers

Correct 4

11

Choice-C

This sum does not represent the addition of 21 + (-18) + (-6) + 7 which is 4 not 28

Wrong 28

12

Choice-D

This result is not obtained by adding 21 + (-18) + (-6) + 7 which is 4 not 16

Wrong 16

13

Answer

Option

B

14

Sumup

Please Summarize Choices