Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
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How to Calculate
a/b ± c/d = (ad ± bc) / bd
To add or subtract fractions, find a common denominator by multiplying the denominators, then add or subtract the numerators. To multiply fractions, multiply the numerators and denominators separately. To divide, flip the second fraction and multiply. Always simplify the result by dividing both numerator and denominator by their greatest common factor (GCF).
Frequently Asked Questions
How do I add fractions with different denominators?
Find the least common denominator (LCD), convert both fractions to equivalent fractions with the LCD, then add the numerators and keep the common denominator.
How do I simplify a fraction?
Find the greatest common divisor (GCD) of the numerator and denominator, then divide both by the GCD. For example, 12/18: GCD is 6, so 12÷6 / 18÷6 = 2/3.