Addition
\(\frac{a}{b} + \frac{c}{d} = \frac{ad + bc}{bd}\) — Find common denominator, then add numerators
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions and simplification
Fraction Calculator
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Results
Enter values and click Calculate to see the result.
Fraction Operations
Fractions represent parts of a whole. To add or subtract fractions, use a common denominator. To multiply, multiply numerators and denominators. To divide, multiply by the reciprocal.
Key points
- Always simplify the final answer when possible.
- A denominator can never be zero.
- When dividing, the second fraction must not have numerator zero.
- Addition and subtraction require a common denominator.
\(\frac{a}{b} \pm \frac{c}{d} = \frac{ad \pm bc}{bd}\)
Worked Examples
Subtraction
\(\frac{a}{b} - \frac{c}{d} = \frac{ad - bc}{bd}\) — Find common denominator, then subtract numerators
Multiplication
\(\frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d}\) — Multiply numerators and denominators
Division
\(\frac{a}{b} \div \frac{c}{d} = \frac{a \times d}{b \times c}\) — Multiply by the reciprocal of the second fraction
Example: 1/4 + 1/3
\(\frac{1}{4} + \frac{1}{3} = \frac{3}{12} + \frac{4}{12} = \frac{7}{12}\)
Example: 2/3 × 3/4
\(\frac{2}{3} \times \frac{3}{4} = \frac{2 \times 3}{3 \times 4} = \frac{6}{12} = \frac{1}{2}\)