SOLUTION: Thomas is thinking of a number. He knows that the product of 5 less than twice his number and 3 more than his number is 13. What is his number?

SOLUTION: Thomas is thinking of a number. He knows that the product of 5 less than twice his number and 3 more than his number is 13. What is his number?

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Question 730853: Thomas is thinking of a number. He knows that the product of 5 less than twice his number and 3 more than his number is 13. What is his number?
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
(2x - 5)(x + 3) = 13
2x^2 - 5x + 6x - 15 = 13
2x^2 + x - 28 = 0
(2x - 7)(x + 4) = 0

x = 7/2 or x = -4
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