To solve the equation \( 11 = r + 13 \):

Subtract 13 from both sides:

\[
11 - 13 = r
\]

\[
r = -2
\]

So, the value of \( r \) is \( -2 \).

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Here are some related questions to expand on this concept:

1. What is the value of \( r \) if \( 17 = r + 9 \)?
2. Solve for \( x \) in \( x + 12 = 20 \).
3. If \( 8 + y = 15 \), what is the value of \( y \)?
4. How would you solve \( 5 = s + 7 \)?
5. Solve the equation \( t - 4 = 10 \).

**Tip**: When solving equations, always aim to isolate the variable by performing inverse operations.

Learn how to solve the linear equation 11 = r + 13 with a clear, step-by-step solution. This problem focuses on the concept of isolating variables using inverse operations, ideal for students in Grades 6-8.

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