Answer:
1/7 +5/9={1×9+5×7)/(9×7)=44/63is your answer
This graph has no solutions and is inconsistent
After solving I have come up with 6 2/9 or 6.22222.
18.5 - 6 = 12.5 gallons empty
12.5 / 18.5 = 0.676
0.676 x 100 = 67.6%
Answer: 67.6%
1/8 is the answer when you subtract 4/8from 5/8
