$$\frac { 3 } { 5 } + \frac { 7 } { 10 } + \frac { 1 } { 2 }$$
$\frac{9}{5}=1.8$
$$\frac{6}{10}+\frac{7}{10}+\frac{1}{2}$$
$$\frac{6+7}{10}+\frac{1}{2}$$
$$\frac{13}{10}+\frac{1}{2}$$
$$\frac{13}{10}+\frac{5}{10}$$
$$\frac{13+5}{10}$$
$$\frac{18}{10}$$
$$\frac{9}{5}$$
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$\frac{3 ^ {2}}{5} = 1\frac{4}{5} = 1.8$
