Question

reciprocal of (5/21÷5/17) × -2/3 -¹​

Answer 1

Step-by-step explanation:

$\frac{5}{21} \div \frac{5}{17 } \times ( - \frac{2}{3} ) - 1$

$\frac{17}{21} \times ( - \frac{2}{3} ) - 1$

$= \frac{ - 34}{63} - 1$

$= \frac{ - 34 + 63}{63}$

$= \frac{ 29}{63}$

thus it's reciprocal is 63/29