Let's solve the equation step by step:

\[
-7r - 3r = -13 - 7 - r
\]

### Step 1: Combine like terms on both sides.
On the left-hand side, combine \(-7r\) and \(-3r\):
\[
-10r = -13 - 7 - r
\]

On the right-hand side, combine \(-13\) and \(-7\):
\[
-10r = -20 - r
\]

### Step 2: Move the \(-r\) from the right-hand side to the left-hand side by adding \(r\) to both sides:
\[
-10r + r = -20
\]

This simplifies to:
\[
-9r = -20
\]

### Step 3: Solve for \(r\) by dividing both sides by \(-9\):
\[
r = \frac{-20}{-9} = \frac{20}{9}
\]

### Final Answer:
\[
r = \frac{20}{9}
\]

Let me know if you'd like more details or have any questions!

Here are 5 related questions for practice:
1. Solve: \(5x + 3x = 16 - 2x\)
2. Solve: \(-8y - 4y = -24 + y\)
3. Solve: \(7p + 2p = -11 - 3p\)
4. Solve: \(-6m - m = 12 - 4m\)
5. Solve: \(4x + 6 = 2x - 8\)

**Tip:** Always start by simplifying both sides of the equation to make solving easier.

Learn how to solve the linear equation -7r - 3r = -13 - 7 - r with a step-by-step solution. This problem covers essential algebraic concepts such as combining like terms and solving for variables. Suitable for students in Grades 7-9.

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