Найдите значение выражения: (8,25*10/11-10)*(11 2/3:2 2/9-6,15)+7:(-2 1/2)

[latex](8,25*\frac{10}{11}-10)(11\frac{2}{3}:2\frac{2}{9}-6,15)+7:(-2\frac{1}{2})[/latex] = [latex](\frac{8,25*10}{11}-10)(\frac{35}{3}:\frac{20}{9}-6,15)+7:(-\frac{5}{2})[/latex] = [latex](7,5-10)(\frac{35}{3}*\frac{9}{20}-6,15)+7*(-\frac{2}{5})[/latex] = [latex]-2,5(\frac{35*3}{20}-6,15)+(-\frac{7*2}{5})[/latex] = [latex]-2,5(\frac{7*3}{4}-6,15)+(-2,8)[/latex] = [latex]-2,5(5,25-6,15)-2,8[/latex] = [latex]-2,5*(-0,9)-2,8[/latex] = [latex]2,25-2,8[/latex] = [latex]-0,55.[/latex]