Staci has 8 3/8 liters of paint and uses 5 3/4 liters of it. how much paint does staci have left? give your answer in simplest form.

We will use subtraction to solve this. We will subtract 5 3/4 from 8 3/8, because we must take away the amount she used. 

8 3/8 - 5 3/4

The easiest way to solve this is to convert to fractions. 

67/8 - 23/4

We must create common denominators to solve this. We will multiply both 23 and 4 from the second fraction by 2 to get to a common denominator of 8. 

67/8 - 46/8 = 21/8

We will then convert this fraction back to a mixed number. 

21/8 = 2 5/8

2 5/8 liters is our final answer