Question

by what number should (3) power subtract 1 be multiplied so that the product is (6) power subtract one

please do it fast

Answer 1

let the second no. be x
${3}^{ - 1} \times x = {6}^{ - 1}$
$\frac{1}{3} \times x = \frac{1}{6}$
transpose 3 to RHS
$x = \frac{1}{6} \times 3$
$x = \frac{1}{2}$
or

$x= {2}^{ - 1}$