SOLUTION: When the Danes multiplied their secret number by 3 and then added -7, the result was 72 less than twice the opposite of the number. What was the secret number of the Danes?

Question 1123111: When the Danes multiplied their secret number by 3 and then added -7, the result was 72 less than twice the opposite of the number. What was the secret number of the Danes?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52794) (Show Source): You can put this solution on YOUR website!
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3x - 7 = 2*(-x) - 72 3x - 7 = -2x - 72 3x + 2x = -72 + 7 5x = -65 x = = -13. Answer. -13.

Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!

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