1. **State the problem:** Solve the inequality $$ (7x - 2)^2 - 7(x - \frac{2}{7})(7x + 1) + \frac{x}{2} > 3(7x - 2) + \frac{1}{7} $$ with the condition $$ x < \frac{2}{7} $$.
2. **Expand and simplify each term:**
- Expand $$ (7x - 2)^2 = 49x^2 - 28x + 4 $$
- Expand $$ -7(x - \frac{2}{7})(7x + 1) $$: First, expand inside the parentheses:
$$ (x - \frac{2}{7})(7x + 1) = 7x^2 + x - 2x - \frac{2}{7} = 7x^2 - x - \frac{2}{7} $$
Multiply by $$ -7 $$:
$$ -7(7x^2 - x - \frac{2}{7}) = -49x^2 + 7x + 2 $$
- The term $$ \frac{x}{2} $$ remains as is.
- The right side is $$ 3(7x - 2) + \frac{1}{7} = 21x - 6 + \frac{1}{7} = 21x - \frac{41}{7} $$
3. **Rewrite the inequality:**
$$ 49x^2 - 28x + 4 - 49x^2 + 7x + 2 + \frac{x}{2} > 21x - \frac{41}{7} $$
4. **Combine like terms on the left:**
$$ (49x^2 - 49x^2) + (-28x + 7x + \frac{x}{2}) + (4 + 2) > 21x - \frac{41}{7} $$
$$ 0 + (-21x + \frac{x}{2}) + 6 > 21x - \frac{41}{7} $$
5. **Simplify the x terms:**
$$ -21x + \frac{x}{2} = -\frac{42x}{2} + \frac{x}{2} = -\frac{41x}{2} $$
So inequality becomes:
$$ -\frac{41x}{2} + 6 > 21x - \frac{41}{7} $$
6. **Bring all terms to one side:**
$$ -\frac{41x}{2} + 6 - 21x + \frac{41}{7} > 0 $$
7. **Combine x terms:**
$$ -\frac{41x}{2} - 21x = -\frac{41x}{2} - \frac{42x}{2} = -\frac{83x}{2} $$
8. **Combine constants:**
$$ 6 + \frac{41}{7} = \frac{42}{7} + \frac{41}{7} = \frac{83}{7} $$
9. **Inequality is now:**
$$ -\frac{83x}{2} + \frac{83}{7} > 0 $$
10. **Multiply both sides by 14 (LCM of 2 and 7) to clear denominators:**
$$ 14 \times \left(-\frac{83x}{2} + \frac{83}{7}\right) > 14 \times 0 $$
$$ -7 \times 83x + 2 \times 83 > 0 $$
$$ -581x + 166 > 0 $$
11. **Isolate x:**
$$ -581x > -166 $$
12. **Divide both sides by -581, reversing inequality sign because divisor is negative:**
$$ x < \frac{166}{581} $$
13. **Simplify fraction if possible:**
166 and 581 share a factor of 1 only, so fraction stays as is.
14. **Recall the domain restriction:**
$$ x < \frac{2}{7} \approx 0.2857 $$
15. **Compare $$ \frac{166}{581} \approx 0.2857 $$ to $$ \frac{2}{7} \approx 0.2857 $$:**
They are approximately equal, but $$ \frac{166}{581} \approx 0.2857 $$ is slightly less than $$ \frac{2}{7} $$ (since 2/7 = 0.285714...).
16. **Final solution considering domain:**
$$ x < \frac{166}{581} $$
**Answer:** $$ \boxed{x < \frac{166}{581}} $$
Inequality Simplification 5C30A8
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