SOLUTION: Twice a number added to four is the same as one subtracted from the number. What is the number?

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Question 856959: Twice a number added to four is the same as one subtracted from the
number. What is the number?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
2x + 4 = x - 1
.
Subtract x from each side
x + 4 = -1
Subtract 4 from each side
x = -5
.
Let's plug it in to make certain it works.
(2 * -5)+4 = -5 -1
-10 + 4 = -6
-6 = -6
Success!