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12-11-2018
Geography

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[tex] - ( - 3x - 9y - 49)[/tex]

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12-11-2018

Expand the following:

-(-3 x - 9 y - 49)

-(-49 - 3 x - 9 y) = -(-49) - -3 x - -9 y:

-(-49) - -3 x - -9 y

-(-49) = 49:

49 - -3 x - -9 y

-(-3) = 3:

49 + 3 x - -9 y

-(-9) = 9:

Answer: 49 + 3 x + 9 y

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