Question

2 1/13*(5-11 2/13)+11 2/13*(2 1/3-5)= решите плиз очень надо по порядку

Answer 1

$\displaystyle 2\frac{1}{13}*(5-11\frac{2}{13})+11\frac{2}{13}*(2\frac{1}{3}-5)=\frac{27}{13}(5-\frac{145}{13})+\frac{145}{13}(\frac{7}{3}-5)=\\\\\frac{27}{13}(-\frac{80}{13})+\frac{145}{13}(-\frac{8}{3})=-\frac{2160}{169}-\frac{1160}{39}=-\frac{21560}{507}=-42\frac{266}{507}$