Subjects algebra

Expression Evaluation 789659

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1. **State the problem:** Evaluate the expression $2r + 3(5k - 6)$ when $x = 2$. 2. **Clarify variables:** The expression contains variables $r$ and $k$, but the problem gives a value for $x$. Since $r$ and $k$ are not defined in terms of $x$, we cannot substitute $x=2$ directly into the expression without additional information. 3. **Assumption:** If the problem meant to substitute $r=2$ instead of $x=2$, then proceed with $r=2$. However, since $k$ is still unknown, the expression cannot be fully evaluated. 4. **If $r=2$ and $k$ is unknown:** The expression becomes: $$2(2) + 3(5k - 6) = 4 + 15k - 18 = 15k - 14$$ 5. **Final answer:** Without a value for $k$, the expression simplifies to $15k - 14$ when $r=2$. **Note:** Please provide values for $r$ and $k$ or clarify the problem for a complete evaluation.