Question

/-это дробная черта говорю взорание
(1/13+1/14):(1/13-1/14)x(1/27)=

Answer 1

$( frac{1}{13} + frac{1}{14} ) : ( frac{1}{13} - frac{1}{14} ) * frac{1}{27} = \ \ = ( frac{14+13}{182} ) : ( frac{14-13}{182} ) * frac{1}{27} = \ \ = frac{27}{182} * frac{182}{1} * frac{1}{27} = 1$