Which one of the following fractions is NOT equivalent to $\dfrac{5}{8}$?

The correct answer is $\dfrac{1}{12}$ + $\dfrac{6}{12}$

$\dfrac{1}{8}$ + $\dfrac{4}{8}$ = $\dfrac{5}{8}$, so it is equivalent.

$\dfrac{3}{16}$ + $\dfrac{7}{16}$ = $\dfrac{10}{16}$ = $\dfrac{5}{8}$, so it is equivalent.

$\dfrac{1}{12}$ + $\dfrac{6}{12}$ = $\dfrac{7}{12}$, so it is not equivalent.

$\dfrac{6}{24}$ + $\dfrac{9}{24}$ = $\dfrac{15}{24}$ = $\dfrac{5}{8}$, so it is equivalent.


Hence $\dfrac{1}{12}$ + $\dfrac{6}{12}$ is the answer.