Question

The number of gallons of gas that were in the tank minus 9 leaves 3 gallons

Answer 1

Hey!

To solve the missing number of the original amount of gallons that were in the tank is simply by adding the two numbers we have:

9+3= 12 gallons

To make sure 12 was the original number, subtract 12 from 9.

12-9= 3 gallons

So your answer to your question is 12 gallons!

Hope this helped! °ω°

Answer 2

Answer:

I expect u wanna find the number of gallons ni the tank initially. If so, your answer is 12 gallons.

Step-by-step explanation:

Let the number of gallons in the tank be x.

Then,

x  - 9 =3

x -9 +9 = 3+9

x       = 12

Hope i helped u :p