SOLUTION: four times the sum of 1 and some number is -16. what is the number?

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Question 565844: four times the sum of 1 and some number is -16. what is the number?
Answer by gulkhetab(2) About Me  (Show Source):
You can put this solution on YOUR website!
Let x be the required number.
Let us write the given condition in symbols as:
4(1+x)=-16
4+4x=-16
4x=-16-4
4x=-20
x=-20/4
x=-5
Therefore, the number is -5.