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13-06-2018
Mathematics

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Six less than five times a number is subtracted from three times the number. if the result is 12, find the number.

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13-06-2018

The answer is -3

First, transform the sentence into an equation, and let x be the missing number:

12 = 3x - (5x -6)
12 = 3x -5x + 6
12-6 = 3x - 5x
6 = -2x
x = -3

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