MCQ
$\left\{\left(\frac{3}{4}\right)^{-1}-\left(\frac{1}{4}\right)^{-1}\right\}^{-1}=?$
- A$\frac{3}{8}$
- ✓$\frac{-3}{8}$
- C$\frac{8}{3}$
- D$\frac{-8}{3}$
✓
Answer
Correct option: B.
$\frac{-3}{8}$
B
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