Practise the method.Example 141−52Show worked answerAnswer: 20−3Use common denominator 20:41=205 and 52=208.Subtract the numerators: 205−8=20−3.The fraction is already in simplest form: 20−3.Example 261×61Show worked answerAnswer: 361Multiply the numerators and denominators: 361.The fraction is already in simplest form: 361.Example 34243Show worked answerAnswer: 23Dividing by a fraction means multiplying by its reciprocal: 43×24.Multiply the numerators and denominators: 812.Divide numerator and denominator by 4:23.