Question

2 1/7•(2 1/3+2 2/15)-8,8

Answer 1

$displaystyle tt 2frac{1}{7}cdotbigg(2 frac{1}{3}+2 frac{2}{15}bigg)-8,8= frac{27}{35};\\\1). 2 frac{1}{3}+2 frac{2}{15}=2 frac{5}{15}+2 frac{2}{15}=4frac{7}{15}\\\2). 2frac{1}{7}cdot4 frac{7}{15}= frac{15}{7}cdot frac{67}{15}= frac{67}{7}\ \\3). frac{67}{7}-8,8= frac{67}{7}- frac{88}{10}= frac{670-616}{70}= frac{54}{70}= frac{27}{35};$