Add:
$-15+28+9$
A) 13
B) -4
C) 52
D) 22

Add -15 and 28: − 15 + 28 = 13 .
Add 13 and 9: 13 + 9 = 22 .
The final result is 22.
The correct answer is 22 ​ .

Explanation

Adding the numbers We need to add the numbers -15, 28, and 9. Let's start by adding -15 and 28.

Calculate -15 + 28 − 15 + 28 = 13

Adding 13 and 9 Now, we add the result, 13, to the remaining number, 9.

Calculate 13 + 9

Final result 13 + 9 = 22

Selecting the correct answer So, the sum of -15, 28, and 9 is 22. Looking at the options, we see that option D is 22.


Examples
Understanding how to add positive and negative numbers is crucial in managing personal finances. For instance, if you have $28 in your bank account, then spend $15, and later deposit $9, this problem shows you how to calculate your final balance. This skill helps in budgeting, tracking expenses, and making informed financial decisions.

Answered by GinnyAnswer | 2025-07-08

The sum of -15, 28, and 9 is 22. Therefore, the correct answer is option D, 22.
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Answered by Anonymous | 2025-08-16