Решить полностью!!!!!! пожалуйста

Решите задачу:

$\frac{5}{6} + 2 \frac{3}{4} : 4 \frac{7}{9} * 2 \frac{2}{3} -1 \frac{2}{3}=\frac{181}{258}$

$1) 2 \frac{3}{4} : 4 \frac{7}{9} = \frac{11}{4} : \frac{43}{9} = \frac{11}{4} * \frac{9}{43} = \frac{99}{172}$

$2) \frac{99}{172} * 2 \frac{2}{3} = \frac{99}{172} * \frac{8}{3} = \frac{33}{43} * \frac{2}{1} = \frac{66}{43} = 1 \frac{23}{43}$

$3) \frac{5}{6} + 1 \frac{23}{43} = 1 + \frac{5}{6} + \frac{23}{43} = 1 + \frac{215}{258} + \frac{138}{258} = 1 + \frac{353}{258} = 1 + 1 \frac{95}{258} = 2 \frac{95}{258}$

$4) 2 \frac{95}{258} - 1 \frac{2}{3} = 2-1+ \frac{95}{258} - \frac{2}{3} = 1 + \frac{95}{258} - \frac{172}{258} = 1 + \frac{-77}{258} = \frac{1}{1} + \frac{-77}{258} = \frac{258}{258} - \frac{77}{258} = \frac{181}{258}$