Add or subtract fractions with clear steps. Reduce results, convert mixed numbers, inspect denominators, and export clean answers for study needs.
| Example | Expression | LCD | Unsimplified | Simplified |
|---|---|---|---|---|
| 1 | 1/2 + 1/3 | 6 | 5/6 | 5/6 |
| 2 | 3/4 - 1/8 | 8 | 5/8 | 5/8 |
| 3 | 1 1/2 + 2/3 | 6 | 13/6 | 2 1/6 |
| 4 | 2 3/5 - 1 1/10 | 10 | 15/10 | 1 1/2 |
Use a least common denominator before combining fractions.
For addition: a/b + c/d = (ad + bc) / bd.
For subtraction: a/b - c/d = (ad - bc) / bd.
For faster reduction, use the least common denominator.
Then divide numerator and denominator by their greatest common divisor.
Mixed numbers convert first. Use whole × denominator + numerator.
Adding and subtracting fractions can feel slow. Errors often appear when denominators differ. This calculator makes the process easier. It handles mixed numbers too. It also reduces each answer automatically. Students, teachers, and parents can check work quickly. The result area explains each major step clearly.
Fractions need a common denominator before addition. The calculator finds the least common denominator first. That keeps numbers smaller. Smaller numbers are easier to read and simplify. After that, numerators are added. The denominator stays the same. The unsimplified answer then gets reduced using the greatest common divisor.
Subtraction follows the same structure. Both fractions are rewritten with one shared denominator. Then the second numerator is subtracted from the first. Negative answers stay accurate. Improper fractions also remain valid. The tool converts them into mixed numbers when useful. This helps learners compare different forms of the same value.
Reduction means dividing the numerator and denominator by the same factor. The best factor is the greatest common divisor. That creates the simplest fraction. A simplified result is easier to compare, graph, or use in later math. It also improves homework checking and exam review. Clean answers matter in algebra and arithmetic.
Mixed numbers are useful in real life. Recipes, measurements, and construction examples often use them. This calculator accepts whole numbers with fraction parts. It converts each mixed number into an improper fraction first. That method avoids confusion. Then it shows the final answer as a simplified fraction, mixed number, and decimal.
Use it for class practice, worksheets, tutoring, and self-study. It is also useful for quick accuracy checks. The export feature helps save results for reports or revision sheets. The example table shows common cases. The step list supports learning, not only final answers. That makes this tool practical and educational.
Yes. Put the whole number in its own field. Then enter the numerator and denominator. The tool converts the mixed number before calculating.
Yes. It automatically finds the greatest common divisor and reduces the result to lowest terms whenever reduction is possible.
Yes. The calculator finds a least common denominator first. Then it rewrites both fractions and performs the subtraction correctly.
The tool still shows the improper fraction. It also gives a mixed number form and a decimal value for easier interpretation.
Yes, for whole number parts. Keep fraction numerators and denominators positive in their fields. This keeps input rules simple and avoids sign confusion.
It keeps converted fractions as small as possible. Smaller working numbers make the arithmetic cleaner and the reduction step easier.
You can export the result summary as a CSV file or a PDF file. Both options appear after a successful calculation.
Yes. It shows the common denominator, unsimplified answer, simplified answer, and step list. That makes it useful for checking and learning.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.