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13-06-2020
Mathematics

contestada

the sum of a number and seven is doubled, the result is two less than
the number. Find the number.

Respuesta :

13-06-2020

Answer:

-16

Step-by-step explanation:

Let's call the number x. Double the sum of x and seven is 2(x + 7) and two less than x is x - 2. Since these are equal we can write:

2(x + 7) = x - 2

2x + 14 = x - 2

x = -16

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