hunterboo0773 hunterboo0773

10-11-2017
Mathematics

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If the sum of a number and one is doubled, the result is three less than the number. Find the number

Respuesta :

mathstudent55 mathstudent55

10-11-2017

Let the unknown number be x.

sum of a number and one: x + 1

sum of a number and one is doubled: 2(x + 1)

three less than the number: x - 3

2(x + 1) = x - 3

2x + 2 = x - 3

x + 2 = -3

x = -5

The number is -5.

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