Question
What should be subtracted from $\frac{-2}{3}$ to get $\frac{-5}{6}?$

Answer

The required number $=\frac{-2}{3}-\Big(\frac{-5}{6}\Big)$
$(LCM$ of $3, 6 = 6)$
$=\frac{-2}{3}+\frac{5}{6}$
$=\frac{-4+5}{6}$$=\frac{1}{6}$

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