Math Problem Statement

-21 + -18

Solution

The image shows the expression 21+18-21 + -18.

Let me solve it:

21+(18)=39-21 + (-18) = -39

Would you like further explanation or details? Feel free to ask for more clarification.

Here are five related questions to expand your understanding:

  1. How do we add two negative numbers?
  2. What happens when we add a positive and a negative number?
  3. Can you explain the difference between subtraction and adding negative numbers?
  4. What are the rules for adding and subtracting integers?
  5. How do operations with absolute values affect integer addition?

Tip: When adding negative numbers, think of it as moving left on a number line, combining the "distances" from zero.

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Math Problem Analysis

Mathematical Concepts

Integer Addition
Negative Numbers

Formulas

Addition of negative numbers: a + (-b) = a - b

Theorems

-

Suitable Grade Level

Grades 6-8