SOLUTION: the difference between twice a number and 9 is 17 what is the number?

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Question 506239: the difference between twice a number and 9 is 17 what is the number?
Answer by xdragonfight(116) About Me  (Show Source):
You can put this solution on YOUR website!
a number means any number so we can put as X=a number because we don't know what is the number

so is x-9=17
so x=26
26-9=17