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14-11-2017
Mathematics

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Which of the following, when substituted for the variable, makes the equation 3x - 5 = 7 true?

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chrysanthemum chrysanthemum

14-11-2017

3x - 5 = 7
3k = 12
k = 4

3(4) - 5 = 7
12 - 5 = 7
7 = 7

Hope this helps.

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