Operate on fractions and reduce the result to lowest terms.
Formula
a/b ± × ÷ c/d → reduced form
Explanation
Addition/subtraction need a common denominator. Multiplication multiplies numerators and denominators. Division multiplies by the reciprocal. Always reduce by dividing numerator and denominator by their GCD. Denominators cannot be zero.
Variables
a/bfirst fraction
c/dsecond fraction
operator+, −, ×, or ÷
When to use
Cooking, measurements, probability, and any exact rational arithmetic.