youngblood1 youngblood1
  • 22-01-2015
  • Mathematics
contestada

I'm thinking of a number. When I double my number and then subtract the result from five I get negative one. What is my number

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naǫ
naǫ naǫ
  • 22-01-2015
x - the number
you double the number - 2x
you subtract the result from five - 5-2x
you get negative one - 5-2x=-1

[tex]5-2x=-1 \\ -2x=-1-5 \\ -2x=-6 \\ x=\frac{-6}{-2} \\ x=3[/tex]

The number is 3.
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