$$\frac{ 18 }{ 7 } +( \frac{ -6 }{ 5 } )+( \frac{ -8 }{ 21 } )+( \frac{ 2 }{ 15 } )$$
$\frac{118}{105}\approx 1.123809524$
$$\frac{18}{7}-\frac{6}{5}+\frac{-8}{21}+\frac{2}{15}$$
$$\frac{90}{35}-\frac{42}{35}+\frac{-8}{21}+\frac{2}{15}$$
$$\frac{90-42}{35}+\frac{-8}{21}+\frac{2}{15}$$
$$\frac{48}{35}+\frac{-8}{21}+\frac{2}{15}$$
$$\frac{48}{35}-\frac{8}{21}+\frac{2}{15}$$
$$\frac{144}{105}-\frac{40}{105}+\frac{2}{15}$$
$$\frac{144-40}{105}+\frac{2}{15}$$
$$\frac{104}{105}+\frac{2}{15}$$
$$\frac{104}{105}+\frac{14}{105}$$
$$\frac{104+14}{105}$$
$$\frac{118}{105}$$
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$\frac{2 \cdot 59}{3 \cdot 5 \cdot 7} = 1\frac{13}{105} = 1.1238095238095238$
