Question

пожалуйста помогите​

Answer 1

$\displaystyle \tt 1). \ -\frac{1}{3}\cdot\frac{6}{5}-\frac{5}{6}\cdot\frac{3}{25}=-\frac{2}{5}-\frac{1}{10}=-\frac{4}{10}-\frac{1}{10}=-\frac{5}{10}=-\frac{1}{2};\\\\\\2). \ 0,005\cdot50\cdot50000=2500000\cdot5:1000=12500;$