SOLUTION: Solve the problems in one variable. A number plus itself, plus twice itself, plus four times itself is equal to -104. What is the number?

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Question 1172237: Solve the problems in one variable.
A number plus itself, plus twice itself, plus four times itself is equal to -104. What is the number?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x+x+2x+4x=-104
8x=-104
x=-13