Answer
$\frac{1}{24}$ of the tank remains.
Work Step by Step
$\frac{3}{4} - \frac{1}{3} - \frac{3}{8}$
Find the LCM using prime factorization.
4 = 2 x 2
3 = 3
8 = 2 x 2 x 2
LCM = 2 x 2 x 2 x 3 = 24
Express as like fractions then subtract.
$\frac{3}{4} - \frac{1}{3} - \frac{3}{8}$ = $\frac{18}{24} - \frac{8}{24} - \frac{9}{24}$ = $\frac{1}{24}$
