Answer:
you subtract 7 from both sides
Step-by-step explanation:
The correct value is 12.
0.35 Gallons.
Since there is already 9/10 in it, you can only pour 1/10 in now. 1/10th of 3.5 is 0.35.
1/9
3^-2 = 1/3^2
1/3^2 = 1/9
