Conversion factors:
2 pints = 1 quart
4 quarts = 1 gallon
60 minutes = 1 hour
15 pints/minute x 60 minutes/hour x 1 quart/2 pints x 1 gallon/4 quarts = 112.5 gallons/hour
Step by step explanation:
You first subtract z on both sides of the equal sign
ax-bx=(z-y)
Since a and b both have a "x" you can subtract them
(a-b)x=(z-y)
then you divide "x" on both sides of the equal sign

Step-by-step explanation:
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13 + 21 = 13- -21
The minus sign and negative cancel each other out.
Here is the answer, I couldn’t type it out so I took a picture of it, if you need the steps please let me know