littlemathquark
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- In the ABC triangle with integer sides, point D on [AB] and point E on [AC] are taken such that DE is tangent to the incircle. If ∣AD∣=5, ∣AE∣=6, ∣DE∣=7, how many different values can ∣BC∣ take?
I can find radius of incircle of ADE and incircle of ABC triangle but I don't know how them help me.