Answer:
[tex] \frac{2}{5} (d - 10) - \frac{2}{3} (d + 6) \\ = \frac{2d}{5} - \frac{20}{5} - \frac{2d}{3} - \frac{12}{3} \\ = \frac{2d}{5} - \frac{2d}{3} - \frac{20}{5} - \frac{12}{3} \\ = \frac{6d - 10d}{15} - 4 - 4 \\ = \frac{ - 4d}{15} - 8 \\ = \frac{ - 4d - 120}{15 } \\ = - ( \frac{4d + 120}{15} )[/tex]
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