The expression \( 1 - (-1) \) involves subtracting a negative number. According to the rules of arithmetic, subtracting a negative number is the same as adding its positive equivalent.

\[
1 - (-1) = 1 + 1 = 2
\]

So, \( 1 - (-1) = 2 \).

Would you like more details on why subtracting a negative is like adding? Here are some related questions for practice:

1. What is \( 2 - (-3) \)?
2. How does \( -4 - (-6) \) simplify?
3. Solve \( 5 - (-5) \).
4. What is \( -7 - (-2) \)?
5. Simplify \( 3 - (-4) + 2 \).

**Tip:** When you see a negative sign in front of a negative number, think of it as a double negative, which becomes positive.

Explore the arithmetic operation 1 minus negative 1. Learn why subtracting a negative number is equivalent to addition and how to solve similar problems. This example simplifies to 2, and is suitable for students in Grades 5-7.

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