How do you subtract and add mixed numbers?

oYou first need to convert from a mixed number to an improper fraction by multiplying the whole number by the denominator and adding that number to the number currently in the numerator. Then, you need to make sure they have a common denominator, and if not you need to find the greatest common denominator. Then you can add or subtract them.

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .