Question

What should be subtracted from $8\frac{3}{10}$ to get $2\frac{2}{3}$?

Answer 1

Let $x$ be the number that is to be subtracted from $8\frac{3}{10}$ to get $2\frac{2}{3}$.

$8\frac{3}{10}-x=2\frac{2}{3}$

$\frac{21}{10}-x=\frac{8}{3}$

$x=\frac{21}{10}-\frac{8}{3}$

$x=\frac{21\left(3\right)-8\left(10\right)}{30}$

$x=\frac{-17}{30}$

Therefore, $-\frac{17}{30}$ is to be subtracted from $8\frac{3}{10}$ to get $2\frac{2}{3}$.