$$\frac { 1 } { 5 } + \frac { 7 } { 5 } + \frac { ( - \frac { 2 } { 5 } ) + - \frac { 1 } { 3 } } { 5 }$$
$\frac{109}{75}\approx 1.453333333$
$$\frac{1+7}{5}+\frac{-\frac{2}{5}-\frac{1}{3}}{5}$$
$$\frac{8}{5}+\frac{-\frac{2}{5}-\frac{1}{3}}{5}$$
$$\frac{8}{5}+\frac{-\frac{6}{15}-\frac{5}{15}}{5}$$
$$\frac{8}{5}+\frac{\frac{-6-5}{15}}{5}$$
$$\frac{8}{5}+\frac{-\frac{11}{15}}{5}$$
$$\frac{8}{5}+\frac{-11}{15\times 5}$$
$$\frac{8}{5}+\frac{-11}{75}$$
$$\frac{8}{5}-\frac{11}{75}$$
$$\frac{120}{75}-\frac{11}{75}$$
$$\frac{120-11}{75}$$
$$\frac{109}{75}$$
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$\frac{109}{3 \cdot 5 ^ {2}} = 1\frac{34}{75} = 1.4533333333333334$
