Question

Answer 1

\(=\dfrac{-2}{5}\left(\dfrac{13}{131}+\dfrac{118}{131}\right)\cdot\dfrac{5}{4}=\dfrac{-1}{2}\)

Answer 2

b = (-26/655 + -236/655) : 4/5

b = -2/5 : 4/5

b = -1/2

Answer 3

\(B=\left[-\dfrac{2}{5}\cdot\left(\dfrac{13}{131}-\dfrac{118}{131}\right)\right]:\dfrac{4}{5}=\dfrac{42}{131}:\dfrac{4}{5}=-\dfrac{1}{2}\)