Answer:
2.5 gallons
Step-by-step explanation:
Make the denominators of the fractions the same and combine them


Then simplify the fraction

Then subtract how many gallons you have from how many you want

You will need 2.5 gallons to make 3 gallons
Answer:
that is what it would look like
Hope it helps!❤❤
The second term would be -3f^3 because when in descending order it is
6f^4 - 3f^3 - 2f^2 + 9f