$$[ \frac{ 9 }{ 16 } \times \frac{ -3 }{ 9 } ]+[ \frac{ 9 }{ 16 } \times \frac{ 4 }{ 12 } ]$$
$0$
$$\frac{9}{16}\left(-\frac{1}{3}\right)+\frac{9}{16}\times \frac{4}{12}$$
$$\frac{9\left(-1\right)}{16\times 3}+\frac{9}{16}\times \frac{4}{12}$$
$$\frac{-9}{48}+\frac{9}{16}\times \frac{4}{12}$$
$$-\frac{3}{16}+\frac{9}{16}\times \frac{4}{12}$$
$$-\frac{3}{16}+\frac{9}{16}\times \frac{1}{3}$$
$$-\frac{3}{16}+\frac{9\times 1}{16\times 3}$$
$$-\frac{3}{16}+\frac{9}{48}$$
$$-\frac{3}{16}+\frac{3}{16}$$
$$0$$
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