Question: 1 + \frac{1}{2} (7x - 10) + \frac{1}{2} x = 3x
1. **State the problem:** Solve the equation $$1 + \frac{1}{2} (7x - 10) + \frac{1}{2} x = 3x$$ for $x$.
2. **Use the distributive property:** Expand $$\frac{1}{2} (7x - 10)$$ to get $$\frac{1}{2} \times 7x - \frac{1}{2} \times 10 = \frac{7}{2} x - 5$$.
3. **Rewrite the equation:**
$$1 + \frac{7}{2} x - 5 + \frac{1}{2} x = 3x$$
4. **Combine like terms on the left side:**
$$1 - 5 + \frac{7}{2} x + \frac{1}{2} x = 3x$$
$$-4 + \frac{8}{2} x = 3x$$
$$-4 + 4x = 3x$$
5. **Isolate $x$ terms:** Subtract $3x$ from both sides:
$$-4 + 4x - 3x = 3x - 3x$$
$$-4 + \cancel{4x} - \cancel{3x} = \cancel{3x} - \cancel{3x}$$
$$-4 + x = 0$$
6. **Solve for $x$:** Add $4$ to both sides:
$$-4 + x + 4 = 0 + 4$$
$$\cancel{-4} + x + \cancel{4} = 4$$
$$x = 4$$
**Final answer:** $$x = 4$$