(1 1/3-625 1/4):(15/17)^-1 2 вариант 1ое задание

[latex]\left(1\frac13-625\frac14\right):\left(\frac{15}{17}\right)^{-1}\\1)\;1\frac13-625\frac14=\frac43-\frac{2501}4=\frac{16-7503}{12}=-\frac{7487}{12}\\2)\;-\frac{7487}{12}:\left(\frac{15}{17}\right)^{-1}=-\frac{7487}{12}\cdot\frac{17}{15}=-\frac{127279}{180}=-707\frac{19}{180}[/latex]