Question

(2,5-2 1/3)*(-5 1/7)+1 1/3:(-5,6) помогите пожалуйста

Answer 1

$displaystyle tt (2,5-2frac{1}{3})cdot(-5frac{1}{7})+1frac{1}{3}:(-5,6)=-1frac{2}{21};\\\1). 2,5-2frac{1}{3}=frac{5}{10}-frac{1}{3}=frac{15-10}{30}=frac{1}{6}\\2). frac{1}{6}cdot(-5frac{1}{7})=-frac{1}{6}cdotfrac{36}{7}=-frac{6}{7}\\3). 1frac{1}{3}:(-5,6)=-frac{4}{3}cdotfrac{10}{56}=-frac{5}{21}\\4). -frac{6}{7}-frac{5}{21}=-frac{18+5}{21}=-1frac{2}{21}$