Final answer:
To subtract the numbers 89923 and -5 5/31, convert the mixed number to an improper fraction, subtract the whole numbers and fractions separately, and express the answer in lowest terms.
Step-by-step explanation:
To subtract the numbers 89923 and -5 5/31, we need to change the mixed number -5 5/31 to an improper fraction. First, we multiply the whole number (-5) by the denominator (31) and then add the numerator (5) to get -160/31. Now, we can subtract the whole numbers and the fractions separately. Subtracting the whole numbers, 790 - 89923 gives us -89133.Next, we subtract the fractions: -160/31 - 5/31 = -165/31. Therefore, the final answer, in lowest terms, is -89133 - 165/31. It is important to note that the numerator can be negative but the denominator should always be positive.
Learn more about Subtraction of mixed numbers