What should be subtracted from thrice the rational number -8/3 to get 5/2?

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Solution

$Let x be subtracted . Now, 3 \times (- \frac{8}{3}) - x = \frac{5}{2} \Rightarrow - 8 - x = \frac{5}{2} \Rightarrow x = - 8 - \frac{5}{2} = - \frac{21}{2}$

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