1. **State the problem:** Solve the equation $$\frac{8}{x + 2} - \frac{5}{3} = \frac{x - 1}{3}$$ for $x$.
2. **Identify the formula and rules:** To solve rational equations, first find a common denominator to eliminate fractions by multiplying both sides.
3. **Find the common denominator:** The denominators are $x+2$ and $3$. The common denominator is $3(x+2)$.
4. **Multiply both sides by the common denominator:**
$$3(x+2) \times \left(\frac{8}{x + 2} - \frac{5}{3}\right) = 3(x+2) \times \frac{x - 1}{3}$$
5. **Simplify each term:**
$$3(x+2) \times \frac{8}{x + 2} = 3 \times 8 = 24$$
$$3(x+2) \times \frac{5}{3} = (x+2) \times 5 = 5(x+2)$$
$$3(x+2) \times \frac{x - 1}{3} = (x+2)(x-1)$$
6. **Rewrite the equation:**
$$24 - 5(x+2) = (x+2)(x-1)$$
7. **Expand terms:**
$$24 - 5x - 10 = x^2 + 2x - x - 2$$
Simplify:
$$24 - 5x - 10 = x^2 + x - 2$$
$$14 - 5x = x^2 + x - 2$$
8. **Bring all terms to one side:**
$$0 = x^2 + x - 2 - 14 + 5x$$
$$0 = x^2 + 6x - 16$$
9. **Solve the quadratic equation:**
Use the quadratic formula:
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$
where $a=1$, $b=6$, $c=-16$.
Calculate discriminant:
$$\Delta = 6^2 - 4 \times 1 \times (-16) = 36 + 64 = 100$$
Calculate roots:
$$x = \frac{-6 \pm \sqrt{100}}{2} = \frac{-6 \pm 10}{2}$$
10. **Find the two solutions:**
$$x_1 = \frac{-6 + 10}{2} = \frac{4}{2} = 2$$
$$x_2 = \frac{-6 - 10}{2} = \frac{-16}{2} = -8$$
11. **Check for restrictions:** The denominator $x+2$ cannot be zero, so $x \neq -2$. Both $2$ and $-8$ are valid.
**Final answer:** $$x = 2, -8$$
Solve Rational Dbd941
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