$$A = ( - \frac { 2 } { 5 } + \frac { 2 } { 3 } ) \times \frac { 1 } { 8 }$$
$A=\frac{1}{30}\approx 0.033333333$
$$A=\left(-\frac{6}{15}+\frac{10}{15}\right)\times \frac{1}{8}$$
$$A=\frac{-6+10}{15}\times \frac{1}{8}$$
$$A=\frac{4}{15}\times \frac{1}{8}$$
$$A=\frac{4\times 1}{15\times 8}$$
$$A=\frac{4}{120}$$
$$A=\frac{1}{30}$$
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$A≔\frac{1}{30}$
