Three times my value minus five is equal to twice my value plus seven. What number am I keeping secret?
12
Solving the equation 3x - 5 = 2x + 7 by subtracting 2x from both sides gives x - 5 = 7, so x = 12.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Hard. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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