When and why do you need to change mixed numbers to improper fractions?

When and why do you need to change mixed numbers to improper fractions?

by definition an improper must be larger that a whole right?

Seam bought a record player for $7.25, his father has old albums which play at 33 and a third revolutions per minute. How many revolutions would an album make in twenty minutes

Supposed you have the improper fraction 60/8. This can be converted to the mixed number by dividing first (resulting in 7 4/8) and then reducing to 7 1/2, OR you can reduce first to 15/2...

Don't understand the steps to follow

I AM STUCK IN MY MATH HOMEWORK, PLEASE HELP

how to solve the fraction 11/12-1/6

Whats 7 divided by -6? Whats the fraction ?

how do I add 1/2+1/4 and change it to improper fraction

bimproper fraction to a mixed number and simplify