SOLUTION: When 18 is subtracted from four times a certain number, the result is the original number. What is the number?
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Question 550549: When 18 is subtracted from four times a certain number, the result is the original number. What is the number?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
"When 18 is subtracted from four times a certain number, the result is the original number." means that we have the equation . Let's solve this equation for n.
Start with the given equation.
Add to both sides.
Subtract from both sides.
Combine like terms on the left side.
Divide both sides by to isolate .
Reduce.
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Answer:
So the solution is
So the unknown number is 6
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