Add, subtract, multiply, or divide fractions and mixed numbers—answers simplify automatically for homework checks.
Start calculating ↓Fraction A (mixed numbers OK)
Fraction B
Enter two fractions
to see the simplified result
Mixed → improper: (w × d + n) / d when d > 0
a/b + c/d = (ad + bc) / bd
a/b − c/d = (ad − bc) / bd
a/b × c/d = ac / bd
a/b ÷ c/d = a/b × d/c (c ≠ 0)
Results reduce by the greatest common divisor so numerator and denominator stay coprime.