Question
Riordan has 101 buttons. Fabian has thrice as many buttons as Riordan. How many buttons must Fabian give Riordan so that both of them will have the same number of buttons?
4 m

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Riordan has 101 buttons. Fabian has thrice as many buttons as Riordan. How many buttons must Fabian give Riordan so that both of them will have the same number of buttons?