\(\dfrac{17}{-26}\cdot\left(\dfrac{1}{6}-\dfrac{5}{3}\right):\dfrac{17}{13}-\dfrac{20}{3}\cdot\left(\dfrac{2}{5}-\dfrac{1}{4}\right)+\dfrac{2}{3}\cdot\left(\dfrac{6}{5}-\dfrac{9}{2}\right)\)
\(=-\dfrac{17}{26}\cdot\dfrac{1}{10}:\dfrac{17}{13}-\dfrac{20}{3}\cdot\dfrac{3}{20}+\dfrac{2}{3}\cdot\left(-\dfrac{33}{10}\right)\)
\(=-\dfrac{1}{20}-1+\left(-\dfrac{11}{5}\right)=-\dfrac{13}{4}\)
`17/-26 (1/6-5/3) : 17/13 - 20/3(2/5-1/4)+2/3 (6 /5-9/2)`
`= 17/-26 . (-3/2) . 13/17 - 20/3 . 3/20+2/3.(-33/10)`
`= -51/128 . 13/17 - 1 + (-11/5)`
`= -39/128 - 1 + (-11/5)`
`= -167/128 + (-11/5)`
`= -3,5046875`
