Subjects algebra

Solve Equation B28704

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Question: Solve each equation. $$\frac{9x + 7}{2} - x + \frac{x - 2}{7} = 36$$
1. **State the problem:** Solve the equation $$\frac{9x + 7}{2} - x + \frac{x - 2}{7} = 36$$. 2. **Identify the formula and rules:** To solve this linear equation with fractions, we first find a common denominator to clear the fractions, then simplify and solve for $$x$$. 3. **Find the least common denominator (LCD):** The denominators are $$2$$ and $$7$$, so $$\text{LCD} = 14$$. 4. **Multiply every term by the LCD to clear fractions:** $$14 \times \left(\frac{9x + 7}{2} - x + \frac{x - 2}{7}\right) = 14 \times 36$$ 5. **Distribute multiplication:** $$14 \times \frac{9x + 7}{2} - 14 \times x + 14 \times \frac{x - 2}{7} = 504$$ 6. **Simplify each term:** $$7(9x + 7) - 14x + 2(x - 2) = 504$$ 7. **Expand the parentheses:** $$7 \times 9x + 7 \times 7 - 14x + 2x - 4 = 504$$ $$63x + 49 - 14x + 2x - 4 = 504$$ 8. **Combine like terms:** $$63x - 14x + 2x + 49 - 4 = 504$$ $$51x + 45 = 504$$ 9. **Isolate the variable term:** $$51x = 504 - 45$$ $$51x = 459$$ 10. **Divide both sides by 51:** $$x = \frac{459}{51}$$ 11. **Simplify the fraction:** $$x = \frac{\cancel{459}^{9} \times 51}{\cancel{51}^{1} \times 51} = 9$$ **Final answer:** $$x = 9$$