Question

$frac{ b^{2} }{36 a^{2}- b^{2} } : frac{b}{6a-b}$ при a = $frac{1}{6}$, b = $frac{1}{9}$

Answer 1

$frac{ b^{2} }{(6a-b)(6a+b) } * frac{6a-b}{b} = frac{b}{6a+b} = frac{ frac{1}{9} }{6* frac{1}{6} + frac{1}{9} } = frac{1}{9} * frac{9}{10} =0.1$