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Answer dijiye pleeeees​

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\mathfrak{\huge{-\frac{1}{2}}}

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(\frac{9}{ - 10}) - ( \frac{ - 6}{15}) \\ \\ \\ ( \frac{ - 9}{10} ) + ( \frac{6}{15} ) \\ \\ \\ \frac{ - 9 \times 15 + 6 \times 10}{15 \times 10} \\ \\ \\ \frac{ - 135 + 60}{150} \\ \\ \\ - \frac{ 75}{150} \\ \\ \\ \bf - \frac{ 1}{2}


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