To simplify the expression \(-8(x - 3y) + 5(-2x - 7y)\), we can follow the steps below:
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Distribute \(-8\) in the first term: \[ -8(x - 3y) = -8 \cdot x + (-8) \cdot (-3y) = -8x + 24y \]
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Distribute \(5\) in the second term: \[ 5(-2x - 7y) = 5 \cdot (-2x) + 5 \cdot (-7y) = -10x - 35y \]
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Combine the two results: \[ -8x + 24y - 10x - 35y \]
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Combine like terms for \(x\) values: \[ -8x - 10x = -18x \]
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Combine like terms for \(y\) values: \[ 24y - 35y = -11y \]
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Put the results together: \[ -18x - 11y \]
So, the simplified expression is: \[ \boxed{-18x - 11y} \]