(1 9/16 × 3 1/5 + 6 2/3 - 9 : 2 2/5) : (17 7/12 - 6 1/3)

1) [latex]1 frac{9}{16}*3 frac{1}{5} = frac{25*16}{16*5}= 5[/latex]2) [latex]9:2 frac{2}{5}= 9:2,4=3,75[/latex]3) 5+[latex]6 frac{2}{3} [/latex]=[latex]11 frac{2}{3} [/latex]4) [latex]11 frac{2}{3}- 3,75= 11frac{2}{3}-3 frac{3}{4}= frac{35}{3}- frac{15}{4}= frac{140-45}{12} = frac{95}{12} = 7 frac{11}{12} [/latex]5) [latex]17 frac{7}{12}- 6 frac{1}{3}= frac{211-76}{12} = frac{135}{12} = frac{45}{4} = 11 frac{1}{4} [/latex]6) [latex]7 frac{11}{12}:11 frac{1}{4}= frac{95*4}{12*45} = frac{19*1}{3*9}= frac{19}{27} [/latex]Ответ: [latex] frac{19}{27} [/latex]