Question

$\frac{5}{6} : 6^{-2} -1:5^{-2}=$

Answer 1

5/6 : 6^-2 - 1 : 5^-2 =

= 5/6 : 1/6^2 - 1 : 1/5^2 =

= 5/6 : 1/36 - 1 : 1/25 =

= 5/6 × 36 - 1 × 25 =

= 5 × 6 - 25 =

= 30 - 25 =

= 5