self Maths Puzzle

Find a number such that it exceeds 18 by three times the number by which it is less than 86?

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self Other Question

The LCM of 2 numbers is 39780 and their ratio is 13 : 15. Then the numbers are
If the operation ^ is defined by the equation x ^ y = 2x + y, what is the value of a in 2 ^ a = a ^3