Addition and subtraction of fractions: You must find a common denominator and convert the original fractions to equivalent fractions with the new denominator. Add or subtract the numerators only. Simplify if possible.
Multiplication of fractions: you multiply numerator times numerator and denominator times denominator. Simplify if possible.
Division of fractions: you must change the problem to multiplication by keeping the first fraction the same, changing division sign to multiplication sign and flipping the second fraction. Now you follow the steps for multiplying fractions.
Multiplication of fractions: you multiply numerator times numerator and denominator times denominator. Simplify if possible.
Division of fractions: you must change the problem to multiplication by keeping the first fraction the same, changing division sign to multiplication sign and flipping the second fraction. Now you follow the steps for multiplying fractions.