$$- \frac{ 3 }{ -11 } + \frac{ 5 }{ 9 }$$
$\frac{82}{99}\approx 0.828282828$
$$-\left(-\frac{3}{11}\right)+\frac{5}{9}$$
$$\frac{3}{11}+\frac{5}{9}$$
$$\frac{27}{99}+\frac{55}{99}$$
$$\frac{27+55}{99}$$
$$\frac{82}{99}$$
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$\frac{2 \cdot 41}{3 ^ {2} \cdot 11} = 0.8282828282828283$