Final answer:
To write the mixed number 20(1)/(7) as an improper fraction, convert the whole number part to a fraction and then combine it with the given fraction part. Find a common denominator for the two fractions and add them together.
Step-by-step explanation:
To write the mixed number 20(1)/(7) as an improper fraction, we need to convert the whole number part to a fraction and then combine it with the given fraction part. The whole number '20' can be written as '20/1'. So, the mixed number can be written as (20(1)/(7)) = ((20/1) + (1/7)).
To combine the two fractions, we need to find a common denominator. The common denominator is 7.
(20/1) + (1/7) = (140/7) + (1/7) = (141/7).
Therefore, the mixed number 20(1)/(7) can be written as an improper fraction 141/7.