$$\frac{ 5 }{ 6 } + \frac{ 7 }{ 9 } \times ( \frac{ 4 }{ 3 } - \frac{ 1 }{ 2 } )=$$
$\frac{40}{27}\approx 1.481481481$
$$\frac{5}{6}+\frac{7}{9}\left(\frac{8}{6}-\frac{3}{6}\right)$$
$$\frac{5}{6}+\frac{7}{9}\times \frac{8-3}{6}$$
$$\frac{5}{6}+\frac{7}{9}\times \frac{5}{6}$$
$$\frac{5}{6}+\frac{7\times 5}{9\times 6}$$
$$\frac{5}{6}+\frac{35}{54}$$
$$\frac{45}{54}+\frac{35}{54}$$
$$\frac{45+35}{54}$$
$$\frac{80}{54}$$
$$\frac{40}{27}$$
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$\frac{2 ^ {3} \cdot 5}{3 ^ {3}} = 1\frac{13}{27} = 1.4814814814814814$
