SOLUTION: The difference between nine and twice a number, n, is one. I don't understand how to solve this problem

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Question 527174: The difference between nine and twice a number, n, is one.
I don't understand how to solve this problem

Answer by oberobic(2304)   (Show Source): You can put this solution on YOUR website!
The difference is subtraction.
.
9 -2n = 1
.
-2n = -8
.
n = 4

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