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25-02-2018
Mathematics

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write an equivalent equation that does not contain parentheses for 3(k-x) = -3x-9

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Аноним Аноним

25-02-2018

3(k-x)= -3x-9
3k - 3x = -3x - 9 ← equation without parentheses
3k - 3x + 3x = - 9
3k = -9
k = -9/3
k = -3 ← simplest form

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