What is the value of Negative 9 r minus 7 when r = 2?

To find the value of the expression \(-9r - 7\) when \(r = 2\), we substitute \(r = 2\) into the expression:

\[
-9r - 7 = -9(2) - 7
\]

Now, calculate it step by step:

\[
-9(2) = -18
\]
\[
-18 - 7 = -25
\]

So, the value of \(-9r - 7\) when \(r = 2\) is \(-25\).

Would you like further details or have any questions?

Here are 5 related questions:
1. What is the value of \(-9r - 7\) when \(r = -2\)?
2. How would the expression change if \(r\) were replaced with \(-r\)?
3. What is the value of \(-9r + 7\) when \(r = 3\)?
4. What happens to the expression if both terms have positive signs?
5. What is the value of \(-9r^2 - 7\) when \(r = 2\)?

**Tip:** Always apply parentheses when substituting values into expressions to avoid errors!

Learn how to solve the algebraic expression -9r - 7 by substituting r = 2. This detailed, step-by-step explanation covers key algebra concepts, including substitution in linear expressions. Perfect for students in Grades 6-8 looking to improve their algebra skills.

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