1Cademy - Adding $$\frac{3}{d} + \frac{x}{d}$$

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Fraction Addition and Subtraction with a Common Denominator

Example

Adding $\frac{3}{d} + \frac{x}{d}$

To add the rational expressions $\frac{3}{d}$ and $\frac{x}{d}$ , combine their numerators over the common denominator. Since both expressions share the denominator $d$ , the sum is written as $\frac{3 + x}{d}$ .

Updated 2026-05-26

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OpenStax Intermediate Algebra

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Intermediate Algebra @ OpenStax

Ch.5 Polynomials and Polynomial Functions - Intermediate Algebra @ OpenStax

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Adding $\frac{3}{d} + \frac{x}{d}$

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