1. **State the problem:** Simplify the expression $$\frac{y + 12}{x - 8} + \frac{y(x - 8)}{x^{2}y - 8xy}$$ and determine which given option it is equivalent to.
2. **Analyze the denominators:**
- The first denominator is $$x - 8$$.
- The second denominator is $$x^{2}y - 8xy$$.
3. **Factor the second denominator:**
$$x^{2}y - 8xy = xy(x - 8)$$.
4. **Rewrite the expression with factored denominator:**
$$\frac{y + 12}{x - 8} + \frac{y(x - 8)}{xy(x - 8)}$$.
5. **Simplify the second fraction:**
Cancel $$x - 8$$ in numerator and denominator:
$$\frac{y(x - 8)}{xy(x - 8)} = \frac{y}{xy} = \frac{1}{x}$$.
6. **Rewrite the entire expression:**
$$\frac{y + 12}{x - 8} + \frac{1}{x}$$.
7. **Find common denominator:**
The common denominator is $$x(x - 8)$$.
8. **Rewrite each fraction with common denominator:**
$$\frac{y + 12}{x - 8} = \frac{x(y + 12)}{x(x - 8)}$$
$$\frac{1}{x} = \frac{x - 8}{x(x - 8)}$$
9. **Add the fractions:**
$$\frac{x(y + 12) + (x - 8)}{x(x - 8)} = \frac{xy + 12x + x - 8}{x(x - 8)} = \frac{xy + 13x - 8}{x(x - 8)}$$.
10. **Rewrite denominator:**
$$x(x - 8) = x^{2} - 8x$$.
11. **Check options:**
- Option C numerator: $$xy^{2} + 13xy - 8y$$ (has extra $$y$$ factors, does not match)
- Option D numerator: same as C, denominator different
- Option A and B have more complicated denominators.
12. **Try factoring numerator:**
Our numerator is $$xy + 13x - 8$$, which does not match any option exactly.
13. **Re-examine step 5:**
We simplified $$\frac{y(x - 8)}{xy(x - 8)}$$ to $$\frac{1}{x}$$, but numerator is $$y(x - 8)$$, denominator is $$xy(x - 8)$$.
Cancel $$x - 8$$:
$$\frac{y}{xy} = \frac{1}{x}$$.
14. **Final simplified expression:**
$$\frac{y + 12}{x - 8} + \frac{1}{x} = \frac{x(y + 12) + (x - 8)}{x(x - 8)} = \frac{xy + 12x + x - 8}{x^{2} - 8x} = \frac{xy + 13x - 8}{x^{2} - 8x}$$.
15. **Compare with options:**
Option C denominator is $$x^{2}y - 8xy = xy(x - 8)$$, which is different from our denominator $$x^{2} - 8x$$.
16. **Multiply numerator and denominator by $$y$$ to match denominator:**
Multiply numerator and denominator by $$y$$:
$$\frac{y(xy + 13x - 8)}{y(x^{2} - 8x)} = \frac{xy^{2} + 13xy - 8y}{x^{2}y - 8xy}$$.
This matches Option C exactly.
**Final answer:** Option C
Expression Equivalence 079Ba1
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