SOLUTION: twenty-one less than the product of seven and the difference of a number and one is three times the number. what is the number?

Question 495527: twenty-one less than the product of seven and the difference of a number and one is three times the number. what is the number?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
If n is the required number, the problem can be expressed as:
Simplify and solve for n.

Add 28 to both sides.
Subtract 3n from both sides.
Divide both sides by 4.

The number is 7.
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