I can help you because I know how to convert fractions to mixed numbers, but what is the question exactly?
Substitute a number for each variable
Ex.
2x x=5
(2)(5)
=10
Answer:
7 cents per gallon if his tank was completely empty upon filling
Step-by-step explanation:
55.23/21=2.63 per gallon at original gas station
2.63-2.56=.07 per gallon saved
25 hope it helps have a great day :)
