$$( \frac{ 8 }{ 60 } )+( \frac{ 10 }{ 60 } )+( \frac{ 12 }{ 60 } )$$
$\frac{1}{2}=0.5$
$$\frac{2}{15}+\frac{10}{60}+\frac{12}{60}$$
$$\frac{2}{15}+\frac{1}{6}+\frac{12}{60}$$
$$\frac{4}{30}+\frac{5}{30}+\frac{12}{60}$$
$$\frac{4+5}{30}+\frac{12}{60}$$
$$\frac{9}{30}+\frac{12}{60}$$
$$\frac{3}{10}+\frac{12}{60}$$
$$\frac{3}{10}+\frac{1}{5}$$
$$\frac{3}{10}+\frac{2}{10}$$
$$\frac{3+2}{10}$$
$$\frac{5}{10}$$
$$\frac{1}{2}$$
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$\frac{1}{2} = 0.5$
