MCQ
$\frac{-4}{7} □\frac{0}{9}=\frac{-4}{7}$ then the answer is:
- A$+$
- B$-$
- ✓$+$ or $-$
- DNone of these
$\frac{-4}{7}+\frac{0}{9}=\frac{-4}{7}$
$\frac{-4}{7}-\frac{0}{9}=\frac{-4}{7}$
Therefore we use both $+$ or $-$
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