Math Problem Statement

(7)/4x - (3)/x² = (1)/2x²

Solution

We are given the equation:

74x3x2=12x2\frac{7}{4x} - \frac{3}{x^2} = \frac{1}{2x^2}

Step 1: Find the common denominator

The denominators are 4x4x, x2x^2, and 2x22x^2. To simplify the equation, the least common denominator (LCD) is 4x24x^2. We'll multiply both sides of the equation by 4x24x^2 to eliminate the fractions.

Multiplying each term by 4x24x^2, we get:

(74x)4x2(3x2)4x2=(12x2)4x2\left( \frac{7}{4x} \right) \cdot 4x^2 - \left( \frac{3}{x^2} \right) \cdot 4x^2 = \left( \frac{1}{2x^2} \right) \cdot 4x^2

Step 2: Simplify each term

  • First term: 74x4x2=7x\frac{7}{4x} \cdot 4x^2 = 7x
  • Second term: 3x24x2=12\frac{3}{x^2} \cdot 4x^2 = 12
  • Third term: 12x24x2=2\frac{1}{2x^2} \cdot 4x^2 = 2

Now, the equation becomes:

7x12=27x - 12 = 2

Step 3: Solve for xx

Add 12 to both sides:

7x=147x = 14

Divide by 7:

x=2x = 2

Final Answer:

The solution is x=2x = 2.

Would you like more details, or do you have any questions?

Here are five related questions:

  1. How do you find the least common denominator in similar equations?
  2. Can you solve a similar equation where the constants are different?
  3. How do you handle equations involving higher powers of xx?
  4. What are other methods to solve equations with fractions?
  5. What if the solution involves negative values of xx?

Tip: Always check your solution by substituting back into the original equation to verify.

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Math Problem Analysis

Mathematical Concepts

Algebra
Rational Expressions
Equations with Fractions

Formulas

Multiplying both sides by the Least Common Denominator (LCD)

Theorems

Basic algebraic manipulation
Simplification of fractions

Suitable Grade Level

Grades 9-12