\(\dfrac{-1}{4}.13\dfrac{9}{11}-0,25.6\dfrac{2}{11}\\ =\dfrac{-1}{4}.\dfrac{152}{11}+\left(-\dfrac{1}{4}\right).\dfrac{68}{11}\\ =\dfrac{-1}{4}\left(\dfrac{152}{11}+\dfrac{68}{11}\right)\\ =\dfrac{-1}{4}.\dfrac{220}{11}\\ =\dfrac{-1}{4}.20\\ =-5\)
\(-\dfrac{1}{4}.13\dfrac{9}{11}-0,25.6\dfrac{2}{11}\\ =-\dfrac{1}{4}.13\dfrac{9}{11}-\dfrac{1}{4}.6\dfrac{2}{11}\\ =-\dfrac{1}{4}.\left(13-6\right).\left(\dfrac{9}{11}-\dfrac{2}{11}\right)\\ =-\dfrac{1}{4}.7.\dfrac{7}{11}\\ =-\dfrac{49}{44}\)
\(=\dfrac{-1}{4}.13\dfrac{9}{11}-\dfrac{1}{4}.6\dfrac{2}{11}\)
\(=\dfrac{-1}{4}.\left(13\dfrac{9}{11}-6\dfrac{2}{11}\right)\)
\(=\dfrac{-1}{4}.\left(\dfrac{152}{11}-\dfrac{68}{11}\right)\)
\(=\dfrac{-1}{4}.\dfrac{84}{11}\)
\(=\dfrac{-21}{11}\)
`(-1)/4 . 13 9/11 - 0,25 . 6 2/11`
` = (-1)/4 . 13 9/11 + (-1/4) . 6 2 /11`
` = (-1)/4 .` \(\left[\left(13+6\right)+\left(\dfrac{9}{11}+\dfrac{2}{11}\right)\right]\)
`= (-1)/4 . 20`
` = (-1)/4 . 20`
` = -20/4`
` = -5`
\(\dfrac{-1}{4}\cdot13\dfrac{9}{11}-0.25\cdot6\dfrac{2}{11}\)
= \(-\dfrac{1}{4}\cdot\left(13\dfrac{9}{11}+6\dfrac{2}{11}\right)\)
= \(\dfrac{-1}{4}\cdot20\)
= \(-5\)
