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Two fractions, one operation. Axiom shows the common denominator, the work, and the reduced answer.
Enter each fraction as a whole-number numerator (top) and denominator (bottom), then choose +, −, ×, or ÷. Press Solve step-by-step to see the reduced answer, decimal approximation, and working; convert mixed numbers to improper fractions before entering them.
For addition and subtraction, make the denominators match before combining the numerators. Multiplication combines the two numerators and the two denominators; division turns the second fraction upside down and multiplies. Finally, divide the numerator and denominator by their greatest common factor to put the answer in simplest form.
For 1/2 + 1/3, enter 1, 2, 1, 3 and select +. Change both fractions to sixths: 3/6 + 2/6 = 5/6, approximately 0.8333333333.
For 3/4 ÷ 2/5, enter 3, 4, 2, 5 and select ÷. Multiply by the reciprocal: 3/4 × 5/2 = 15/8 = 1 + 7/8, or 1.875.
Convert it first: 1½ = (1 × 2 + 1)/2 = 3/2. Enter 3 in the top field and 2 in the bottom field; there is no separate whole-number field.
Yes. Put the minus sign on the numerator or denominator. A negative denominator is moved into the numerator, so 1/−2 is treated as −1/2.
A fraction means division by its denominator, and division by zero is undefined. You also cannot divide by a fraction whose numerator is zero.
The reduced fraction is exact within the supported safe-integer calculations. The decimal is rounded to 10 significant digits; use the fraction when your question asks for an exact answer. Decimal numerators and denominators are not supported.
For percentage equivalents or finding common denominators, try the related tools below. The fractions lesson explains why these operations work, so you can check the calculator’s result by hand. Related tools: Percentage Calculator, GCF & LCM Calculator. Read the Fractions & Mixed Numbers lesson or practice fractions & mixed numbers to build confidence without relying on a calculator.