Answer: 14 gallons
Step-by-step explanation:
Let's call the total gallons Abdul's tank can hold x.
Then, based on the information given in the problem, you can write the following expression:
[tex]\frac{1}{5}x+7=\frac{7}{10}x[/tex]
Therefore, when you solve for x, you obtain the following result:
[tex]\frac{1}{5}x+7=\frac{7}{10}x\\\\\frac{1}{5}x-\frac{7}{10}x=-7\\\\-\frac{1}{2}x=-7\\\\-x=(-7)(2)\\x=14[/tex]
