1. **State the problem:** Solve the equation $$\frac{5}{2}x - 7 = \frac{3}{4}x + 14$$ for $x$.
2. **Write down the formula and rules:** To solve for $x$, we want to isolate $x$ on one side. We can do this by moving all terms involving $x$ to one side and constants to the other.
3. **Subtract $\frac{3}{4}x$ from both sides:**
$$\frac{5}{2}x - \frac{3}{4}x - 7 = 14$$
4. **Find a common denominator to combine $x$ terms:**
$$\frac{10}{4}x - \frac{3}{4}x - 7 = 14$$
5. **Combine like terms:**
$$\left(\frac{10}{4} - \frac{3}{4}\right)x - 7 = 14$$
$$\frac{7}{4}x - 7 = 14$$
6. **Add 7 to both sides:**
$$\frac{7}{4}x - \cancel{7} + 7 = 14 + 7$$
$$\frac{7}{4}x = 21$$
7. **Multiply both sides by the reciprocal of $\frac{7}{4}$, which is $\frac{4}{7}$:**
$$x = 21 \times \frac{4}{7}$$
8. **Simplify:**
$$x = \cancel{21}^3 \times \frac{4}{\cancel{7}^1} = 3 \times 4 = 12$$
**Final answer:** $x = 12$
The correct choice is D. x = 12.
Solve Linear Equation 33D743
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