Simplify : $(- 8 p s t + 3 p r q - 14) - (7 p r q - 20 + 2 p s t) =$

6 - 10 p s t + 10 p r q

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6 - 10 p s t - 4 p r q

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- 6 p s t - 10 p r q + 6

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- 10 p s t - 4 p r q - 34

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Solution

The correct option is B $6 - 10 p s t - 4 p r q$
$(- 8 p s t + 3 p r q - 14) - (7 p r q - 20 + 2 p s t)$ $= (- 8 p s t + 3 p r q - 14 - 7 p r q + 20 - 2 p s t)$
$= (- 8 p s t - 2 p s t + 3 p r q - 7 p r q + 20 - 14)$
$= (- 10 p s t - 4 p r q + 6)$

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