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03-12-2015
Mathematics

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A number increased by four is the same as 19 minus 2 times the number

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03-12-2015

From the information given, 4 added to the unknown number is equal to 2 times the unknown number when it is subtracted from 19.

Let the number be x

x + 4 = 19 - 2 (x)

We now expand and simplify the equation by placing unknown on one side and the known on the other side

x + 4 = 19 - 2x

x + 2x = 19 - 4

3x = 15

x = 15 /3

x = 5

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