$$3 + 1 \frac { 1 } { 5 } - 2 \frac { 1 } { 3 } + 2 \frac { 1 } { 5 } =$$
$\frac{61}{15}\approx 4.066666667$
$$3+\frac{5+1}{5}-\frac{2\times 3+1}{3}+\frac{2\times 5+1}{5}$$
$$3+\frac{6}{5}-\frac{2\times 3+1}{3}+\frac{2\times 5+1}{5}$$
$$\frac{15}{5}+\frac{6}{5}-\frac{2\times 3+1}{3}+\frac{2\times 5+1}{5}$$
$$\frac{15+6}{5}-\frac{2\times 3+1}{3}+\frac{2\times 5+1}{5}$$
$$\frac{21}{5}-\frac{2\times 3+1}{3}+\frac{2\times 5+1}{5}$$
$$\frac{21}{5}-\frac{6+1}{3}+\frac{2\times 5+1}{5}$$
$$\frac{21}{5}-\frac{7}{3}+\frac{2\times 5+1}{5}$$
$$\frac{63}{15}-\frac{35}{15}+\frac{2\times 5+1}{5}$$
$$\frac{63-35}{15}+\frac{2\times 5+1}{5}$$
$$\frac{28}{15}+\frac{2\times 5+1}{5}$$
$$\frac{28}{15}+\frac{10+1}{5}$$
$$\frac{28}{15}+\frac{11}{5}$$
$$\frac{28}{15}+\frac{33}{15}$$
$$\frac{28+33}{15}$$
$$\frac{61}{15}$$
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$\frac{61}{3 \cdot 5} = 4\frac{1}{15} = 4.066666666666666$
