amejime amejime

19-10-2022
Mathematics

Answered

Grace gave her sister a riddle.

I have a number x. I add 15 to twice of x to obtain A. I subtract 4 from x to obtain B. I multiply B by 3 to obtain C. A is equal to C.

Graces sister said the riddle cannot be solved but Grace thought otherwise. Who is right?

Answer :

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