I have a el-531x how do i cauculate fractions with it

Use the key marked [a b/c]

• To enter a mixed fraction, enter integral part, press [a b/c], enter the numerator pf fraction part, press [a b/c], then enter the denominator of the fraction and press =.
  
• To enter a fraction or an improper fraction, enter numerator, press [a b/c], then the denominator and =
• If the displayed result is a mixed number , use [2nd][a b/c] to convert it in a fraction (improper fraction).