What should be subtracted from thrice the rational number $\frac{- 8}{3}$ to get $\frac{5}{2}$ .

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Solution

Let the number be $x$ .

According to the question,

$3 \times \frac{- 8}{3} - x = \frac{5}{2}$

$- 8 - x = \frac{5}{2}$

$x = - 8 - \frac{5}{2}$

$x = - \frac{21}{2}$

Hence, this is the answer.

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